PLSQL editor not working

Output:

ERROR:
ORA-01017: invalid credential or not authorized; logon denied

Error: Command failed: timeout 7 sqlplus -S c##42kdrvdqg_42kgv88ut/p_42kdrvdqg_42kgv88ut@//:1521 @queries.sql

The above error is coming.
Kindlky help me resolve.