Odoo Upgrade - How to handle Customisations

Keep your databases up to date with the latest version of Odoo even when you have custom code. We will discuss guidelines and the steps to follow that will make the process as smooth as possible:
Why should you upgrade?
Which steps should you follow?
How to upgrade on odoo.sh with the upgrade tool?
Frequently asked questions.

[@sylvainbonnet9227]

Question : During the upgrade process on branch BrStaging, there are errors in the log panel. Some obsolete custom Modules or Views are the cause of these errors. To disable or uninstall them, we have to use sql queries because we cannot enter odoo which cannot start:
My Try : using in Odoo-sh> SHELL-Tab, the shell command : psql:
To disable a view
UPDATE public.ir_ui_view SET active = false WHERE id = 10381;
To disable/unsinstall a module
UPDATE ir_module_module set state='to remove'
WHERE name in ('my_custom_module') and state='installed';
...have tried that request too:
UPDATE ir_module_module set state='uninstallable'
WHERE name in ('my_custom_module') and state='installed';
...But it doesn t work : after a commit or restart (command: odoosh-restart) the related error still remains!
How to disable a view and uninstall a module during the upgrade process from v13 to v15 ??

[@ayyansiddiqui3656]

Did you find a solution for this?

[@bryanturcios]

As they plan to have better quality control on third party modules in their shop as they are a big deal