I solved the problem with this solution:
- set auth mode to ‘none’ in FreshRSS config file (that was /var/www/freshrss/data/config.php for me)
- go to the web page of the app, you are logged in
- in the app go to Authentication and set to “Use a form” or something like that
- log in through the app home page
Maybe this helps someone else too.
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