i can’t access to my blocks ! when i make a new screen it’s work but for old page not work . i made hard refresh many time but still have problem !
Hy @cgiou, welcome back to the community! 
I altered the title so others would be more likely to follow than create new posts on the same issue. 
There is a thread started on this here. However, this may be an appropriate place as well.
A Github issue has been posted about this as well at this link.
Thank you for sharing. I am wondering, does your screen designer work fine or does that also crash. My screen is going white as soon as I click “blocks”.
[EDIT only my larger projects are having this issue. My Sandbox Environment ‘playground’ project has no issues getting into the block editor but it’s a relatively small project. My big app eith around 5000 blocks on the other hand, doesn’t work
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I am having blank screen on some tabs also whole app froze up had to reinstall same issue