[otrs] The browser you are using is too old. OTRS runs with a huge lists of

Hi all, Finally we have come somewhere with the upgrade from 2.4.7 to 3.0.2. I did all the steps described in the Manual and after some errors, I now get a login screen for OTRS, but it tells me : The browser you are using is too old. OTRS runs with a huge lists of browsers, please upgrade to one of these" and I can't type anything in. Does someone have experience with this? Met vriendelijke groet / Kind regards / Mit freundlichem Gruß, Erik