Issue
In my Pipeline Template Catalogs (PTC) section, I am seeing some entries with the name error-in-catalog-config1, error-in-catalog-config2, error-in-catalog-configN.
Explanation
Every entry with the name error-in-catalog-config$SOME_NUMBER corresponds to a real PTC that failed during the import process.
Those entries appear either if you manually imported a PTC and failed, or if you already successfully imported a PTC and it failed because of its polling (configured in Check for template catalog updates every).
Resolution
First, check why your PTCs are failing during the import process.
Once those import errors are fixed, there won’t be more error-in-catalog-config$SOME_NUMBER errors.
Then, you should manually remove all failed PTCs entries called error-in-catalog-config$SOME_NUMBER by clicking on each item in the Delete catalog dropdown option as shown in the following screenshot: