Sometimes errors occur when a browser has cached an old version of ReadyMind and not updated it. Below are guides for how to clear your cache for major browsers, which allows the browser to then download a fresh and up-to-date version of ReadyMind.

Chrome
To permanently clear cache in Chrome, see here.

Edge
Login to ReadyMind and then press the following buttons simultaneously. 
Windows: Control + Shift + Delete
Mac: Command + Shift + Delete
For further details about how to clear cache in Edge, see here.

Safari
Login to ReadyMind and then press the following buttons simultaneously. 
Command + Option + E   and then refresh the site
For further details about how to clear cache in Safari, see here.