How to Fix The Invalid JSON Error in WordPress

Go to Settings → Permalinks in your WordPress dashboard.
Verify that the correct permalink structure is selected - If the correct structure is already selected, you don't need to change anything.
Click the Save Changes button.
How to Fix The Invalid JSON Error in WordPress
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[@alperkahriman7596]

I worked for 3 hours and 25 minutes and I solved the problem by watching your video. 🎉🎉 Thank you very much boss.

[@mahmadfarazrathore]

Thanks it worked