Seafile Pro 11.0.7 and 11.0.8 cannot GET files Error 500

Hello,

After upgraded from 11.0.6 to 11.0.8 (Pro Edition), I cannot view/download any files, whether it is from web interface, desktop, or mobile client. In Chrome inspect elements, I see “Failed to load resource: the server responded with a status of 500 ()”.

There is no clue in the log files. Any idea?