Start with the manifest
- Open __manifest__.py and read the depends list.
- Confirm every dependency exists in the configured addons paths.
- Check whether the dependency is Community, Enterprise, custom or third-party.
Check the environment
- Update the Apps List after adding missing modules.
- Confirm the module folder is not nested too deeply.
- Read the Odoo log for the first real error, not the last cascade.
Avoid unsafe shortcuts
- Do not delete a dependency from the manifest unless you know the code no longer uses it.
- Do not copy paid or proprietary modules into a project without rights.
- Do not install modules on production without backup planning.
Commands, screenshot and common errors
The block below keeps the article practical: one command/check, one visual reference and the first errors to inspect.
grep -R "depends" __manifest__.py
# then update the Apps List after adding missing addons- Odoo cannot see the module because the addons path or folder nesting is wrong.
- The manifest declares a dependency that is missing from the current environment.
- The first real log error is often above later cascade errors.
Next step
For Odoo 19 Community, keep dependencies free and explicit whenever possible.