I continue to get the following message each time I try to save an encrypted copy of my 2019 tax file on my MacBook Pro: "For security reasons, your answer should be between 6 and 16 characters long, not including any spaces"

My password is between 6 and 16 characters and I have tried various passwords. Nothing works. I continue to get the same error message. As suggested on another question/answer I removed all of the turbo tax files and reinstalled. I still get the error. I am using Turbo Tax Premier.

I am using a MacBook Pro (13-inch, 2019, Four Thunderbolt 3 ports), running Mojave version 10.14.6.