The error you’re encountering, OwlError related to the res.config.settings field pos_epson_printer_ip, suggests an issue with either customizations or an incompatible module related to the Point of Sale (POS) configuration.

Here’s how you can resolve it:

Steps to Troubleshoot and Resolve:

1. Check for Missing or Corrupted Modules

• The field pos_epson_printer_ip appears to be missing or undefined. This might happen if:
  • A module providing this field (likely related to POS Epson Printer integration) is uninstalled or partially installed.
  • The module is outdated or incompatible with your Odoo version.
• Action:
  • Go to Apps > Updates and check for updates related to POS or Epson Printer modules.
  • If you recently uninstalled any module related to POS, consider reinstalling it to check if the issue resolves.

2. Reset the Settings View

• Sometimes, cached views or broken settings views cause issues.
• Action:
  • Log in with an admin account.
  • Navigate to Settings > Technical > User Interface > Views.
  • Search for the res.config.settings view.
  • Locate and reset any customizations related to POS or the pos_epson_printer_ip field.

3. Disable the Epson Printer Integration Temporarily

• If the error stems from a configuration field for Epson printers, disabling the related module might help.
• Action:
  • Go to Apps, find the module related to Epson Printer or POS integrations, and disable/uninstall it.
  • If uninstalling resolves the issue, the module might need to be reinstalled or updated.

4. Check the Odoo Log File

• Review the Odoo server log for detailed information about the error.
• Look for entries related to pos_epson_printer_ip or res.config.settings.
• This can help pinpoint whether the issue is from a custom module, a missing dependency, or another cause.

5. Clear Cache and Rebuild Assets

• Sometimes, the error is due to outdated or corrupted cached assets.
• Action:
  • Clear browser cache and cookies.
  • If you have access to the server:

    ./odoo-bin --addons-path=addons -c odoo.conf --update=all --stop-after-init
    

    Or, for hosted Odoo:
    • Navigate to Settings > Activate Developer Mode.
    • Click on Regenerate Assets.

6. Update or Debug Custom Modules

• If you are using custom modules that modify res.config.settings, check for issues in their code.
• Action:
  • Temporarily disable custom modules one by one to identify the source of the issue.
  • Correct the custom module if it defines the pos_epson_printer_ip field improperly.

7. Raise a Support Ticket

• If the issue persists and you’re using Odoo Online (SaaS), raise a ticket with Odoo support. Include:
  • The exact steps that reproduce the error.
  • The error message and stack trace provided.
  • Details of any recent updates, changes, or installations.

Summary

This issue is likely related to a broken or missing field in the res.config.settings model, possibly caused by a POS module or Epson Printer integration. Follow the above steps to address the issue. If you need further help debugging a custom module or performing specific actions, let me know!