After upgrading to MongoDB 8 we have a problem restoring a sharded cluster from snapshots using this article.

How we make snapshots:
1. On each shard (including the config shard) on a secondary replica we execute this command db.fsyncLock()
2. We take a snapshot using aws cli by executing this command aws ec2 create-snapshot ...other arguments...
3. On each shard (including the config shard) secondary replica we execute this command db.fsyncUnlock()

The problem arises when we do item 6 (in C. Restore Config Server Replica Set) - Restart the mongod as a new single-node replica set
We get an error (you can see it in the attached log file) that causes the mongod process to crash.