portfolio item wont be added

Hello @katerinavl
Are you able to access your files and check the error_log to see if there is any recent entry there?

hi @vmit23 , thank you for your answer ??
Yes I have access to the error_log, but there is no recent entry.

What i also found out is this:
The permalink consists of two words, like example-one.
If i change the permalink to example, i can add the portfolio item to the menu successfully.
If i change it to one, there is an error.
Error also with example-o , exampleone.

I have the WP-Optimize – Clean, Compress, Cache plugin and I run an optimization but the problem remains

If it is due to your permalink settings, I’d advise to look into that.
Go to your admin area-> Settings-> Permalinks and try changing the structure. Preferably to custom structure. Give this a read before doing so: https://www.wpexplorer.com/change-permalinks-wordpress/

This case would be better solved when testing, as the issue can occur due to many different causes ??

Hey! @vmit23
I changed the structure but still this specific item cannot be added

Is there any way i can flush old permalinks? Maybe it is stuck

Hey @katerinavl,

Have you tried this guide for flushing permalinks?

https://typerocket.com/flushing-permalinks-in-wordpress/

Thank you so much for your time and your help!

Yes I tried it and it didnt work.
Also i created a new menu, I can add all items except this specific one.
I also deleted and recreated the item.

Any other ideas?