Is anyone have been faced with the same issue as mine?
when I add or edit some blocks then system showed 403 Forbidden error
All thing was work as well in a couple weeks ago but now it’s error as Below cases
- edit/add Block content, change some fonts color and error 403 when saving
but if there is no color font then no error
- add Block gallery then 403 Forbidden error
This sounds like it might be a configuration error on your hosting. I would check the network tab in your browser to see which endpoints are actually getting the 403 - my hunch is it might be stringent security modules like mod_security or something blocking certain requests because they look “suspicious”, e.g. they contain MySQL keywords in them like “select” or “union”.
But ultimately probably a good question for your hosting provider support.
First of all, thank to you for replying.
I have checked with the Hosting provider and they actually did update the security.
Unfortunately, they can’t change anything only for my site.
So, I moved on to another Hosting provider.
You’re welcome, and that’s a good move - gotta have things able to run. 
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