How do I deal with an ORA-01924 error on my Oracle Autonomous DB?

Summary:

Error starting at line : 10 in command -

GRANT "DBA" TO "ADBSNMP"

Error report -

ORA-01924: role 'DBA' not granted or does not exist

01924. 00000 - "role '%s' not granted or does not exist"

*Cause:  Either the role was not granted to the user, or the role did not exist.

*Action:  Create the role or grant the role to the user and retry

      the operation.

Content (required):

Version (include the version you are using, if applicable): Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production  Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production  Version 19.15.0.1.0 

Code Snippet (add any code snippets that support your topic, if applicable):