can someone explain to me what is the error?

[#1]

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Unsatisfied dependency expressed through method 'setFilterChainProxySecurityConfigurer' parameter 1; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[159,76]
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Unsatisfied dependency expressed through method 'setFilterChainProxySecurityConfigurer' parameter 1; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[159,76]
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Unsatisfied dependency expressed through method 'setFilterChainProxySecurityConfigurer' parameter 1; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[159,76]
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Unsatisfied dependency expressed through method 'setFilterChainProxySecurityConfigurer' parameter 1; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[159,76]
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Unsatisfied dependency expressed through method 'setFilterChainProxySecurityConfigurer' parameter 1; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[159,76]
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Unsatisfied dependency expressed through method 'setFilterChainProxySecurityConfigurer' parameter 1; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.NiFiWebApiSecurityConfiguration': Unsatisfied dependency expressed through method 'setJwtAuthenticationProvider' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtAuthenticationProvider' defined in class path resource [nifi-web-security-context.xml]: Cannot resolve reference to bean 'authorizer' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.Exception: Unable to load the authorizer configuration file at: /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[159,76]

[#2]

@fifi abd

I didn't read through the entire error, but the last line indicates that there is an issue with XML in /home/v962173adm/nifi-1.8.0-bin/nifi-1.8.0/./conf/authorizers.xml. Take a look at row 159 and see if there is anything obvious. Maybe some copy/paste issue where an invalid or unicode character is there? Sometimes a forward or back quote gets in or that long dash character (Em Dash).

If you attach that file, I can take a look and see if there is something obvious there.