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Session '-1' not found. (error 404) on Hue 4

Session '-1' not found. (error 404) on Hue 4

Rising Star

I have enable spark notebook on hue 4 following on this 

 but in sample, when i execute the sample code print 1+1+1, this shows the error : Session '-1' not found. (error 404) like in


The difference is I have execute 

$ sudo -u hdfs hadoop fs -chmod 777 /user/spark
$ sudo -u spark hadoop fs -chmod 777 /user/spark/applicationHistory

 It still doesn't work.  I have check levy log and spark log, nothing found except the 404 error. 


How to resolve it?