Certutil encode bash64 password generation

Trying to generate Bash64 password in terminal using certutil certutil -encode in.txt out.txt

and it seems to be not working and giving this error.

DecodeFile returned The system cannot find the file specified. 0x80070002 (WIN32: 2 ERROR_FILE_NOT_FOUND) CertUtil: -encode command FAILED: 0x80070002 (WIN32: 2 ERROR_FILE_NOT_FOUND) CertUtil: The system cannot find the file specified.