Odoo 15, Invoicing module from 15.0.1.1 upgrade to 15.0.1.2
When I try to upgrade the invoice module, it prompts "External IDs cannot contain spaces". I checked that there is no folder name containing spaces in the addons folder, and I also checked that there is no External Identifier in Technical - Swquences & Identifiers - External Identifiers Values that contain spaces.
Providing error messages of this nature makes it difficult to determine where the error lies since we cannot see your code to confirm if there is an issue with it or not.