ansible secret has a special character ':' (colon) at the end how to deal with special characters in asnible-vault/secrets ?

[sameer_khan]

Exception :

"yaml.scanner.ScannerError: mapping values are not allowed here in “”, line 1, column 22: ldappass: *******:

[Dick_Visser]

https://docs.ansible.com/ansible/latest/reference_appendices/YAMLSyntax.html