I recently applied an upgrade to a custom module after a trivial code update to a custom module (added a field to res.partner and displayed it). Soon after upgrading, I noticed that I could not open the settings module. Opening the module throws this error:
Error:
Traceback:
Error: Missing format type for 'project_tags' value from the 'res.config.settings' model
at Class._formatValue (https://url/web/content/352919-4133081/web.assets_backend.js:917:1160)
at Class.init (https://url/web/content/352919-4133081/web.assets_backend.js:1104:1195)
at Class.prototype.<computed> [as init] (https://url/web/content/352918-98e2baf/web.assets_common.js:4652:488)
at new Class (https://url/web/content/352918-98e2baf/web.assets_common.js:4653:65)
at Class._renderEdit (https://url/web/content/352919-4133081/web.assets_backend.js:1154:15)
at Class._render (https://url/web/content/352919-4133081/web.assets_backend.js:919:36)
at https://url/web/content/352919-4133081/web.assets_backend.js:915:1417
What are some of the possible causes of this error and how do I resolve it?
