With the upgrade to Ivanti Service Manager 2022.1 there is one problem that you might be experiencing with Data Import Integrations not producing Error Stats attachments.
Ivanti is aware of the issue and is actively working on Problem #89360
Note that depending on your Data Centre, your tenants (STG/UAT/Production) may have been upgraded to the latest release. For example, Australia, UK, Europe have been upgraded, while Canada USA is just starting to roll out the 2022.1 release to DEV (STG/UAT). Check your Ivanti Maintenance Notifications here
UPDATE: As of May 2022 the issue with Integration Log Errors Stats attachment creation has been resolved.
ITSM/ITAM/ESM Blog 