Setting up WiFi with a Volans VL-UW120 AC1200 USB WiFi dongle

Support Network
7

==> Unable to install module rtl88x2bu/5.8.7.1.r117.fbb5f57 for kernel 4.19.175-1-MANJARO: Missing kernel headers.

Similar error, however a different module, and the solution doesn’t seem to help:

BTW, WiFi still isn’t working.