Hello,
After upgrading Roundcube from 1.4.1 to 1.4.4
a message appeared
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Your configuration files are now up-to-date!
WARNING: File type detection doesn't work properly!
Please check the 'mime_magic' config option or the finfo functions of PHP and run this script again.
Executing database schema update.
This instance of Roundcube is up-to-date.
Have fun!
All done.
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The Roundcube page does not start (it is white)
Please help
Greetings