I am trying to host an web application (Python Django based) and i am using GPIO pins (library: OPi.GPIO==0.6.3). I got the permission error in "sys/class/gpio/* " and when i give manually permission to several files (location=sys/class/gpio/*) but the issue remains the same .
Device :OrangePi Zero
OS : Ubuntu Bionic with Armbian Linux 4.19.62-sunxi