Also now can't search for documents anymore I imagine the problems are linked. Attached is the error log, I would be happy to give anyone a log in that could help.
Which version of Screen Customization plugin are you using ?
First try and create field idProduct on Document.
It seems your update removed it.
This is possibly using an old versionh of Screen Customization.
If this does not fix the issue, please post here file model/cutom/Document.php
I attached the document.php
I tried to create a product Id and it said already existing. I went ahead and reinstalled the latest screen customization plug in 5.3. Which made where I can't make custom lists now for some reason. If it would be easier to start with a clean install let me know. Attached is what I see on the screen customization screen now, the dddd will not delete for some reason.
Thanks for your help
I can't make custom lists now for some reason
Clean browser cache
There is no major issue on your file, except ddcode references a non existing db field.
This can happen if you restored a DB without the field or copied customization from one instance to the other.
To avoid errors, just comment line
public $idDdcode;
like this
// public $idDdcode;