Custom column not shown in table

So i am working for what have been left behind by other people, and currently want to remove this edit. But i dont see any edit in the column, but in the mapper its shown.

Image for referenced:

and whenever i want to delete the table its show this.

I cant find the categories_table.columnMappers

Hi there @Jonathan!

This seems similar to a bug that's been reported where deleted columns are sometimes still referenced under the hood somewhere. I've added this thread to our internal report.

What I can suggest is deleting the table and starting a new one to avoid that reference being made. You can use that delete button in your last screenshot.
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Thanks.. will creating the new table

Hi, any new tip to correct this bug?
Recreating a table can be really long..