Make sure you're logged into your account on Firefox and then use the cookie login method. Chrome is not available right now, which is why you haven't been able to use that option and the log shows an error.
If this still isn't working, you can use Stealth Core as a workaround. Download + install, login to your account -> Close the program so it writes your cookies to your computer locally -> Open and try MAJIN again as it will try logging in with the local cookies first.
I'd like to make a more robust solution here, but in the meantime, this is an easy workaround.