puppet-mongodb module doesn't show Mongo shell errors in puppet-agent run - ruby

Question

We use the voxpupuli/puppet-mongodb module to create and manage Mongo data bases and users.
As usual we add necessary data to manifests and Hiera and after that the module form a command which it runs on the client side during a puppet-agent run.
We can see the executing command from the puppet-agent debug logs for instance this command create a new DB with the name unixtest_db:
Executing: '/usr/bin/mongo unixtest_db2 --quiet --host 127.0.0.1:27017 --eval load('/root/.mongorc.js'); db.dummyData.insert({"created_by_puppet": 1})'
The problem is the module never report any errors occurred during the commands execution.
For example consider the next hiera code:
tele2_mongodb::mongodb_db:
'unixtest_db': # DB name
user : unixtest
password : >
ENC[PKCS7,....]
auth_mechanism : scram_sha_1
roles :
- dbOwner
As result we have the next command executing and results:
Executing: '/usr/bin/mongo unixtest_db2 --quiet --host 127.0.0.1:27017 --eval load('/root/.mongorc.js'); db.dummyData.insert({"created_by_puppet": 1})'
Notice: /Stage[main]/Tele2_mongodb/Mongodb::Db[unixtest_db]/Mongodb_database[unixtest_db]/ensure: created
Now we can connect to the DB with the user credential mentioned in hiera:
# mongo -u unixtest -p password unixtest_db
MongoDB shell version v5.0.9 connecting to: mongodb://127.0.0.1:27017/unixtest_db?
...
unixtesttst:PRIMARY>
Next we change the DB name in Hiera to all capital letters:
tele2_mongodb::mongodb_db:
'UNIXTEST_DB': # DB name
In puppet agent output we see identical:
Executing: '/usr/bin/mongo UNIXTEST_DB --quiet --host 127.0.0.1:27017 --eval load('/root/.mongorc.js'); db.dummyData.insert({"created_by_puppet": 1})'
Notice: /Stage[main]/Tele2_mongodb/Mongodb::Db[UNIXTEST_DB]/Mongodb_database[UNIXTEST_DB]/ensure: created
But the database is not created, it's not in the db.adminCommand('listDatabases') output (the 1st one with all small letters still exist).
And if we run the command manually on the OS console, we see the error message:
# /usr/bin/mongo UNIXTEST_DB --host 127.0.0.1:27017 --eval " load('/root/.mongorc.js'); db.dummyData.insert({"created_by_puppet": 1})"
MongoDB shell version v5.0.9
...
WriteResult({
"nInserted" : 0,
"writeError" : {
"code" : 13297,
"errmsg" : "db already exists with different case already have: [unixtest_db] trying to create [UNIXTEST_DB]"
}
})
So my question is how to make the puppet also report errors if command execution failed instead of fake notification everything went smoothly.
I have the same problem for DB changes, users and passwords. If something went wrong we never know that from the puppet output.
Any ideas how to fix it?