Hello,
We apologize for the inconvenience you are facing with the Rank Math SEO Pro plugin. The errors you are experiencing could be due to a conflict with another plugin or theme, or it could be related to the recent update.
To resolve this issue, we recommend following these steps:
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Reconnect Website with Rank Math: Start by heading over to WordPress Dashboard → Rank Math SEO → Dashboard → Help, and then click Disconnect Account. Now that your website is disconnected from Rank Math, to reconnect, click on Connect Now button on the same page.
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Plugin Conflict: Sometimes, there arises a situation where Rank Math SEO conflicts with another installed plugin on your website. There can also be a conflict with your theme. You can confirm whether there is a plugin conflict between Rank Math and other Plugins/Themes by following the steps in this KB article.
If the issue persists after following these steps, please provide us with the error details from the console so that our support expert can have a look into the issue that is preventing Rank Math from functioning properly.
Thank you for bringing this to our attention, and we appreciate your patience as we work to resolve this issue for you.
Sources:
Fatal Error Happening on Some Installations After 1.0.49 Update » Rank Math
Why Your SEO Title, Description & Focus Keyword Aren’t Being Saved » Rank Math
How to Fix ‘Automatic Update is Unavailable for this Plugin’ Error in Rank Math » Rank Math
Hello,
We released a quick Beta update you can try to see if that helps.
Please enable the Beta update by following this:
https://rankmath.com/kb/version-control/#beta-updates

If you are unable to see an update, please clear Rank Math’s transients from:
WP Dashboard > Rank Math > Status & Tools > Database Tools > Remove Rank Math Transients > Remove transients

Please clear the caches, server, and WordPress after updating.
You can disable the Beta updates once you update to the latest version and if the issue is fixed.
We are here to assist. Thank you.
Hi!
It seems that this didn’t help. Can I revert to the previous version?
https://prnt.sc/80fugWeicCk0
I cleared the cache, and it started working. Thank you!
Have a nice one!
Hello,
We are super happy that this resolved your issue. If you have any other questions in the future, know that we are here to help you.
If you don’t mind me asking, could you please leave us a review (if you haven’t already) on https://wordpress.org/support/plugin/seo-by-rank-math/reviews/#new-post about your overall experience with Rank Math? We appreciate your time and patience.
If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.