OS: macOS Mojave 10.14.6
How installed: homebrew and Zip file
Error shown on console:
/Applications/Inkdro…g/src/common.js:114 app:error Log in failure: +0ms The user name or passphrase you entered is not correct. Please check your system configuration or report the problem. undefined undefined
What triggered the problem in your case? In my case I installed a plugin and then closed and reopened the application. After that I was getting those errors until I rebooted.