Edit/New post/page shows blank white screen

[newbienovice]

I just updated to WP 5.1 "Betty" and am having the issue stated above "Edit/New post/page shows blank white screen". WordPress was fine on the last two updates of WP 5.
I've tried:
Disabling other plugins and themes (and using Twenty Nineteen)
Clearing the Browser cache
Trying a different Browser
Also installed Classic Editor the page comes back but the Visual pane looks like the Text pane and only when I highlight it cause the font is white (if that makes sense).

If I could get help walking through correcting the issue it would be really appreciated.

[tobifjellner]

Hi and welcome to Core trac. Here we follow up reports and fixing of confirmed bugs in WordPress core software. In other words, this is not a support channel.
I'll close this ticket for now.
Please post instead in ​https://wordpress.org/support where hopefully someone will be able to walk you through some troubleshooting.
If you should, after troubleshooting, find that the problem really IS a bug in WordPress Core, then you can reopen this ticket and add more detailed steps about how to reproduce the bug.

[tobifjellner]

Here's a direct link to creating a new topic (I noted that you've previously tried to ask your question by commenting on somebody else's topic, which isn't the right way...)
​https://wordpress.org/support/forum/how-to-and-troubleshooting/#new-topic-0