schmatzler

Resaving settings does not recreate the app.json file. ??
I manually copied over the last one from a backup and now it works again.

Thanks for looking into making changes permanent for updates ??

Hello,

sometimes it’s so easy. I had WP Rocket active and didn’t clear the cache after updating.

Everything works fine now.

Thanks ??

When I googled the error message, the first topic that came up was this.

What would make more sense – creating another topic or just posting a solution here where it’s easier to find? You decide.

The same problem happened for me too.

Apparently, whenever I add a new menu in WordPress it gets term_id=0 in the database (it’s in the tables wp_terms and wp_term_taxonomy).

What I did first was delete all of these broken menus with this:

DELETE FROM wp_terms WHERE term_id=0;
DELETE FROM wp_term_taxonomy WHERE term_id=0;

Then I created a unique column in both tables. This prevents multiple menus from getting all term_id=0 and also enables direct editing in phpmyadmin:

ALTER TABLE wp_terms ADD UNIQUE KEY (term_id);
ALTER TABLE wp_term_taxonomy ADD UNIQUE KEY (term_id);

After that I created a new menu in WordPress and changed the term_id in both tables to the lowest number possible (because the categories have a term_id too). In my case, this was 21.

Done! Now the menu can be edited and used in WordPress without any error messages.

Try updating it a few times. The download 404’s on wordpress’ servers sometimes, but sometimes it works.