PreArm: GPS 1 failing configuration checks

Actually , i have this warning with 3.6.1, i have one GPS u-blox m8n , i have a 3D lock ,i have tried everything at parameters level in Mission Planner, nothing worked , so i masked the 4096 bit=gps conf check.
So far so good.
Historicaly , this happend after uploading a wrong firmware to my PX4v2 with QGC , then when i flashed AC3.6.1 , the problem appeared.Before i had no problems with AC3.6.0rc11.All my parameters and config were erased.
Any idea?How dangerous is it to mask this check?