Error after upgrade to 3.74 with S3 based blob store

[anuragpathak21]

I have upgraded to 3.74 from 3.71 runnin gon CentOS 8 with Java 17 and H2 database.
I am using S3 as my blob store.

During start of nexus 3.74 saw errors which looks like connection issue to S3 storage.

Once restarted I went to blob store edit screen and clicked on save and got below error.

An error occurred saving data. ERROR: (ID 845202fa-50d7-4ff3-a41f-388dfbc1c64c) java.lang.IllegalArgumentException: Unexpected end of base64-encoded String: base64 variant 'MIME-NO-LINEFEEDS' expects padding (one or more '=' characters) at the end. This Base64Variant might have been incorrectly configured

I have tried to update the Access Key ID and Access Key Secret but the error is still the same. I verified the Key and Secret, both are correct.
My S3 blob store does not have any encryption enabled