You tried accessing: /device/chagallwifi
files are below:
https://lineage.grimler.se/builds/lineage-15.1-20201102-unofficial-chagallwifi-signed.zip
https://lineage.grimler.se/builds/lineage-16.0-20210202-unofficial-chagallwifi-signed.zip
https://lineage.grimler.se/builds/lineage-16.0-20210203-debug_unofficial-chagallwifi-signed.zip
https://lineage.grimler.se/builds/lineage-16.0-20210203-unofficial-chagallwifi-signed.zip