Hi @ADBQueries , Good Day! 

Could you please try running the code again to generate another access token and, once generated, check it on this page, https://jwt.ms, to confirm that the token has not expired?

Also, if not done yet, please review the following discussions on this same error/issue:

https://stackoverflow.com/questions/76426385/databricksdatabricksjdbcdriver500593-communication-link...

Please let me know if this helps and leave a like if this information is useful, followups are appreciated.
Kudos
Ayushi