Thanks for this info. The offline idea partially helped - I was able to load Joplin and get to those notes. So it looks like it could be a Joplin Cloud sync issue.
Making a copy of C:\Users\YourUserName.config\joplin-desktop\database.sqlite and storing it in a safe place.
Done.
Checking whether disconnecting from the internet/similar approaches fix the issue:
To verify that this isn't an ongoing sync issue with Joplin Cloud, try disconnecting from the internet and starting Joplin.
Huge thanks for this! This solved the issue of retrieving the data I needed. That also allows me to work offline in Joplin although obviously that's not ideal and not viable long term.
I also exported the questionable note and deleted it. When I tried to reload Joplin online, the Renderer error is gone and replaced with: "An error occurred: Window Unresponsive". I'm again given the choice of Quit or Restart in Safe Mode. Safe Mode gives the same error and Joplin notes, menus, etc. are inaccessible.
To make sure that this isn't a low-memory issue, try restarting the computer, making sure that no other applications are running, then starting Joplin.
Can confirm this is not an issue.
When Joplin crashes, it should create files with names similar to joplin_crash_dump_20240319T171500.json in C:\Users\YourUserName\ (or a similar folder — I'm currently on a different OS and can't easily double-check).
I searched .config and subfolders for .json files - none are similar to that filename and I don't see any referencing crash dumps.
C:\Users\YourUserName.config\joplin-desktop\ should contain a log.txt file that may contain information about the crash (perhaps near the end of the file).
I do have this file. I took a quick glance at it specifically around the time of the initial crash but nothing glaring popped out though admittedly I don't know precisely what to look for.
I guess the issue now is to get Joplin up and running again. I did try an in place reinstall hoping it would replace any problem files but that did not work. Since I have the info I need, I've held off on a complete uninstall/reinstall in hopes to maybe get to the root of the problem. If it's an account sync issue how could I troubleshoot that?