QGC not working, earlier was working properly

I’m getting this error:

QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to ‘/tmp/runtime-rishabh’
Settings location “/home/rishabh/.config/QGroundControl.org/QGroundControl Daily.ini” Is writable?: true
Filter rules “*Log.debug=false\nGStreamerAPILog.debug=true\n”
System reported locale: QLocale(C, Default, Default) ; Name “C” ; Preffered (used in maps): “None”
LocalizationLog: Qt lib localization for “C” is not present
LocalizationLog: Error loading source localization for “C”
LocalizationLog: Error loading json localization for “C”
Error loading text-to-speech plug-in “speechd”
serialnmea: No serial ports found
VideoReceiverLog: Stop called on empty URI
MAVLinkLogManagerLog: MAVLink logs directory: “/home/rishabh/Documents/QGroundControl Daily/Logs”
VideoReceiverLog: Stop called on empty URI
Map Cache in: “/home/rishabh/.cache/QGCMapCache300” / “qgcMapCache.db”
qml: QGCCorePlugin(0x55b61b348760) []
: Invalid empty URL
Adding target QHostAddress(“127.0.0.1”) 18570
“Json read error ’ }\n ]\n },\n {\n “name”: “CAL_ACC0_TEMP”,\n “type”: “Float”,\n “default”: NaN,\n “group”: “Sensor Calibration”,\n “category”: “System”,\n “volatile”: true,\n '”
CompInfoParamLog: Metadata json file open failed: compid: 1 “illegal number”
ParameterManagerLog: Attemping load from cache
ParameterManagerLog: Parameters cache match failed /home/rishabh/.config/QGroundControl.org/ParamCache/1_1.v2