502 bad gateway

[anmol26s]

I tired installation ffsync on yunohost, but I am getting error 502.

Here is the installation log
https://datamol.in/zerobin/?c93e765fa749b633#/htUSHHM5PvMDEnIH8mC856sLROmDCPkFASUed6/mcY=

[anmol26s]

I am still getting 502 error after the update.
https://datamol.in/zerobin/?91d434a4b384d886#QMmzjVWOkazLvtWGWdGxXaR5YBJV3Vvtj+7kai0/dOo=