Missing parameter error

I am trying to set up a fixed-wing plane with a Pixhawk 4 running the latest stable version of PX4 (1.12), but an error pops up when I go the the “Flight mode” setup tab in QGC. The error reads: “Parameters are missing from firmware. You may be running a version of firmware which is not fully supported or your firmware has a bug in it. Missing params: 1:”. Is this a known issue? Any ideas on how it could be solved?