The problem details and resolution suggest an upgrade to a Cisco-suggested release resolved the issue, and the previous IOS was End-of-Life (EoL), which is likely related to the ios-xe-16 mentioned in the provided URL. Although the exact version isn't explicitly mentioned, the context of the EoL notice for ios-xe-16 suggests a version within that series, and 16.12.3s is listed as an option.
The issue was resolved by upgrading to a newer IOS version, as the previous one was EoL, suggesting a version like 16.12.3s could have been the resolution based on the given context.