Azure DevOps Releases are failing for all the repo all of sudden

Before 1st of Sept all the release succeeded without any issue , but all of sudden all the release pipelines are failing due to the below error.

Error:

2025-09-05T05:52:56.8522017Z error: error parsing STDIN: error converting YAML to JSON: yaml: mapping values are not allowed in this context

What could be the issue ?? Can anyone come across this issue, Please suggest.