Hi,
I am not able to load Json file into Google bigquery table. I am getting below error.

The configuration of "PutBigQueryBatch" processor is as below:


Schema of the file is as below:
[
{
"name":"firstName",
"type":"string"
},
{
"name":"lastName",
"type":"string"
},
{
"name":"age",
"type":"integer"
}
]
Content of the file is as below:
{"firstName": "John","lastName": "Doe","age": "21"}, {"firstName": "Jack","lastName": "Wills","age": "35"}]
Bigquery configuration is as below:

I am using Apache NiFi version:1.9.1
I am getting Java nullpointer Exception. I am not sure if there is any problem in file schema or some configurations.
If anyone need any other information then please let me know.
Please help me in resolving above issue.
Thanks in advance!!