Standard page with image upload blank

Hi.

This saas is great. I just found it today, and it's super-cool.

However, for the life of me, I can't figure out why there's nothing on a standard page that has an image upload element on it. It's completely blank inside the Documentation Tool.

So far, I've tried:

• Chrome
• Chrome incognito
• Firefox
• adding zip.so to php.ini
• Permissions on /wp-content/uploads/h5p
• Restarting the server
• Turning off my adblocker
• Searching this forum and using Google to search as well.

It's just completely blank.

I'm running Wordpress 5.8.2 on a lamp stack on Linux Mint 19.3 at localhost (127.0.0.1).

Could you help me troubleshoot this please?

Thanks,

Sebastian