Need help to solve "Runtime Error"

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1

Hi,
when i try to upload image to G-Drive, it shows this error message "Attempt to invoke virtual method ‘boolean java.lang.String.contains(java.lang.CharSequence)’ on a null object reference.
These are the blocks used :
blocks
blocks(1)
blocks(2)
blocks(3)

blocks(4)
blocks(4)1169×502 38.3 KB

blocks(2)

Please help me.

Thank you