The error "action_spreadsheet_oca couldn't be loaded" usually indicates that there is an issue with the installation of the spreadsheet module from OCA that you have just installed. This could be caused by a few different things:

1. Dependencies: The module may have dependencies that are not installed or are not compatible with your version of Odoo. Make sure that you have all the required dependencies installed and that they are compatible with your version of Odoo.

2. Conflicting modules: The module may be conflicting with other modules that you have installed. Try disabling other modules that may be conflicting with the spreadsheet module to see if that resolves the issue.

3. Version incompatibility: The module version may not be compatible with your version of Odoo. Make sure that you are using the correct version of the module for your version of Odoo.

4. Data migration: The module may have issues with data migration, which can cause errors when trying to edit a spreadsheet. You can try to uninstall the module and then reinstall it again, this time making sure that you run the data migration process.

5. Permissions: The user that is trying to access the spreadsheet module may not have the proper permissions. Try logging in with a different user or check the user's permissions.

6. Technical issue: It's possible that there is a technical issue with the module, in that case, you can consider reporting the issue to the module's maintainers or looking for an updated version of the module.

Try to check the above points, and if none of them resolve the issue, it's recommended to check the log files or consult with the module's maintainers for further support.