Hi,
If the database is accessible, you can navigate to the views folder and see if the field existing in any of the views of the corresponding model.

While searching in views, ensure to search inside View Architecture, if you find any views having the field, delete the usage of the field from the view.

If the above doesn't solve the case, consider upgrading module from command line.


Thanks

Hello Fr4sha,

When deleting a field , you may notice that some data still remains, which can lead to errors.

To resolve this error, you can run the following command in the terminal:

  psql your_database_name

After that, enter the following command:

  ALTER TABLE table_name DROP COLUMN IF EXISTS column_name;

In this command, please replace table_name with the name of your model (remember to replace any periods with underscores) and column_name with the name of the field you want to delete.

Thanks & Regards,

Email:  odoo@aktivsoftware.com           

Skype: kalpeshmaheshwari

Make sure you removed the field from all templates, and functions or methods where you referenced it. 
A simple search could help you identify all the locations you've used your field. 

As a rule of thumb, make sure you are correctly updating the files you changed, when running the server. use "-u all" (update all)  just to be sure