I believe it might have something to do with the last update or more precisely with missing packages.
I know I’m on HBL, but I was facing exactly the same same issue as @hello_friend, luci throwing same error and foris loading indefinitely, only reforis was working partially. After roll back to snapshot before update, everything works as it should, but when I update, issues are back.
Examining what pkgupdate tries to do, there are several removals including packages like python-base, which I believe foris depends on:
pkgupdate removals:
INFO:Queue removal of luci-app-rainbow
INFO:Queue removal of luci-i18n-ahcp-cs
INFO:Queue removal of luci-i18n-adblock-cs
INFO:Queue removal of luci-i18n-transmission-cs
INFO:Queue removal of luci-proto-relay
INFO:Queue removal of luci-proto-openconnect
INFO:Queue removal of luci-app-sqm
INFO:Queue removal of luci-i18n-tinyproxy-cs
INFO:Queue removal of luci-i18n-ahcp-en
INFO:Queue removal of luci-i18n-minidlna-cs
INFO:Queue removal of luci-i18n-bcp38-en
INFO:Queue removal of luci-proto-vpnc
INFO:Queue removal of python-logging
INFO:Queue removal of luci-i18n-bcp38-cs
INFO:Queue removal of luci-app-bcp38
INFO:Queue removal of luci-i18n-upnp-en
INFO:Queue removal of luci-i18n-upnp-cs
INFO:Queue removal of luci-app-upnp
INFO:Queue removal of luci-i18n-mjpg-streamer-en
INFO:Queue removal of luci-i18n-statistics-cs
INFO:Queue removal of luci-i18n-tinyproxy-en
INFO:Queue removal of luci-app-tinyproxy
INFO:Queue removal of relayd
INFO:Queue removal of python-multiprocessing
INFO:Queue removal of python-light
INFO:Queue removal of openconnect
INFO:Queue removal of python-base
INFO:Queue removal of miniupnpd
INFO:Queue removal of bcp38
INFO:Queue removal of luci-i18n-mjpg-streamer-cs
INFO:Queue removal of luci-app-mjpg-streamer
INFO:Queue removal of tinyproxy
INFO:Queue removal of luci-app-ahcp
INFO:Queue removal of ahcpd
INFO:Queue removal of l10n_supported
INFO:Queue removal of luci-i18n-statistics-en
INFO:Queue removal of luci-app-statistics
INFO:Queue removal of luci-lib-iptparser
INFO:Queue removal of rrdtool1
INFO:Queue removal of collectd-mod-rrdtool
INFO:Queue removal of librrd1
INFO:Queue removal of collectd-mod-iwinfo
INFO:Queue removal of collectd-mod-cpu
INFO:Queue removal of collectd-mod-interface
INFO:Queue removal of collectd-mod-load
INFO:Queue removal of collectd-mod-network
INFO:Queue removal of luci-i18n-transmission-en
INFO:Queue removal of luci-app-transmission
INFO:Queue removal of collectd-mod-memory
INFO:Queue removal of luci-i18n-minidlna-en
INFO:Queue removal of luci-app-minidlna
INFO:Queue removal of minidlna
INFO:Queue removal of libexif
INFO:Queue removal of libffmpeg
INFO:Queue removal of libspeex
INFO:Queue removal of alsa-lib
INFO:Queue removal of kmod-sound-core
INFO:Queue removal of libfreetype
INFO:Queue removal of libpng
INFO:Queue removal of libid3tag
INFO:Queue removal of libflac
INFO:Queue removal of mjpg-streamer
INFO:Queue removal of libjpeg
INFO:Queue removal of vpnc
INFO:Queue removal of libgcrypt
INFO:Queue removal of kmod-tun
INFO:Queue removal of vpnc-scripts
INFO:Queue removal of libtasn1
INFO:Queue removal of libvorbis
INFO:Queue removal of libogg
INFO:Queue removal of luci-i18n-adblock-en
INFO:Queue removal of luci-app-adblock
INFO:Queue removal of adblock
INFO:Queue removal of coreutils-sort
INFO:Queue removal of libgpg-error
I’m further convinced by this, because after reinstalling those packages and restarting the router, everything worked as it should.