fixed some lotw php errors

application/libraries/Qra.php

@@ -41,23 +41,29 @@ class Qra {
 	*
 	*/
 	function distance($tx, $rx, $unit = 'M') {
-		// Calc LatLongs
-		$my = qra2latlong($tx);
-		$stn = qra2latlong($rx);
-
-		// Feed in Lat Longs plus the unit type
-		try
-		{
-			$total_distance = distance($my[0], $my[1], $stn[0], $stn[1], $unit);
-		}
-		catch (Exception $e)
-		{
-			$total_distance = 0;
-		}
-
-		// Return the distance
-		return $total_distance;
-	}
+      // Calc LatLongs
+      $my = qra2latlong($tx);
+      $stn = qra2latlong($rx);
+  
+      // Check if qra2latlong returned valid values
+      if ($my && $stn) {
+         // Feed in Lat Longs plus the unit type
+         try
+		   {
+            $total_distance = distance($my[0], $my[1], $stn[0], $stn[1], $unit);
+         } 
+          catch (Exception $e)
+		   {
+            $total_distance = 0;
+         }
+  
+          // Return the distance
+          return $total_distance;
+      } else {
+          // Handle the case where qra2latlong did not return valid values
+          return 0;
+      }
+   }
 
 	/*
 	* Function returns just the bearing

application/models/Logbook_model.php

@@ -2808,10 +2808,10 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 	$qsql = "select COL_CLUBLOG_QSO_UPLOAD_STATUS as CL_STATE, COL_QRZCOM_QSO_UPLOAD_STATUS as QRZ_STATE from ".$this->config->item('table_name')." where COL_BAND=? and COL_CALL=? and COL_STATION_CALLSIGN=? and date_format(COL_TIME_ON, '%Y-%m-%d %H:%i') = ?";
 	$query = $this->db->query($qsql, array($band, $callsign,$station_callsign,$datetime));
 	$row = $query->row();
-	if ($row->QRZ_STATE == 'Y') {
+	if (($row->QRZ_STATE ?? '') == 'Y') {
 		$data['COL_QRZCOM_QSO_UPLOAD_STATUS'] = 'M';
 	}
-	if ($row->CL_STATE == 'Y') {
+	if (($row->CL_STATE ?? '') == 'Y') {
 		$data['COL_CLUBLOG_QSO_UPLOAD_STATUS'] = 'M';
 	}