Add comprehensive error messages

[PeganovAnton]

What does this PR do ?

Adds comprehensive error messages for cases when input has wrong type

Collection: nlp

Changelog

• Add a couple of error messages

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PR Type:

• New Feature
• Bugfix
• Documentation

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Additional Information

• Related to # (issue)

[aleksficek]

Looks good but we should get someone more active in NeMo to also approve before merging

[github-actions]

This PR is stale because it has been open for 14 days with no activity. Remove stale label or comment or update or this will be closed in 7 days.