Tinyint error: java.lang.NullPointerException… [How to Solve]

Tinyint error reporting record
I wrote the wrong set before, which is easy to use when it is written as setid, and then I changed it to setType to report an error, and then I transformed it down to byte. After the change, it will be null pointer. Below are the error reporting information and error reporting line position

Finally, change the position as follows. Change the type from integer to string to solve the problem
the specific principle is not clear. For the time being, record it first. A great God who knows the principle can leave a message. Thank you

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