The error may appear when there's an issue with the browser, Raviraj.
There are times that your browser is full of frequently accessed page resources causing the error when uploading a GSTR-1 file in JSON.
Let's perform some troubleshooting steps to fix the error. You can open your QuickBooks Online (QBO) account using a private window to check if you can upload GSTR-1 without getting an error. Use these keyboard shortcuts based on the browser you're using.
- For Firefox or Microsoft Edge, press Ctrl + Shift + P.
- For Chrome, press Ctrl + Shift + N.
- For Safari, hold down Command + Shift + N.
If this works, you can clear your regular browser's cache so the system can start fresh. But if you get the same results while using a private browser, use a different browser instead.
I've added an article to view different details on how GST works in QBO: How GST impacts QuickBooks users.
Please reach back out to me with any additional information on the issue so, I can get you taken care of. Have a wonderful day!
