Random invalid request token error
Sometimes when going to one of our login pages in the contao frontend users receive an "Invalid request token" error which is fixed by a refresh. However this is annoying. Also sometimes the page will load fine and you enter your credentials and upon submitting the error happens. Again a refresh and it is fixed.
This happened to me today on my iPhone. I went to our site, went to login as soon as it loaded, entered my credentials, clicked the login and got the error.
So is there a way to fix this or find out what is causing it? Thanks