Hello @websy ,
I’d request you to check whether there are any plugins installed that might be causing this?
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Here is what you can do to check:
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1. Please try switching to another theme, like Twenty Seventeen, and check whether the issue persists. If yes, then it is not the theme that is causing the error.
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2. Deactivate all other plugins temporarily and see if that solves the problem. Then, activate plugins one by one to see which plugin is causing the problem.
Also, please try once after re-installing the Ultimate Addons for Gutenberg plugin.
Please let me know how that goes. I will be happy to help with any further assistance you might need.
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