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NullPointerException when uploading a file .xlsx

User_BMQ12 Member Posts: 30 Green Ribbon
edited Jan 18, 2023 8:17AM in Java Programming

Hello everybody! Such a problem, I follow the instructions from

On the line throws NullPointerException

CollectionModel cModel = (CollectionModel) empTable.getValue();

I don't understand what to do, please help me!

error log:

jsff file:

bean class