Session 4 - Tutorial 1
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This error occurred several times when I tried to save the input information. What should I do to solve this problem? Thank you for your help!


I have never seen such an error. Could you show me a screenshot of the form you fill out before the error occurs?

I don't have the screenshot before it, but this error occurred right after I pressed the save button after adding something for the sale packing list. After I turned off the VM completely and restarted a few time, it worked again normally. 

Thanks for letting me know.