dont display navigate button if no GPS is entered

Frontend/lib/mih_packages/mzansi_profile/business_profile/components/mih_business_info_card.dart

@@ -359,6 +359,12 @@ class _MihBusinessCardState extends State<MihBusinessCard> {
     );
   }
 
+  bool isValidGps(String coordinateString) {
+    final RegExp gpsRegex = RegExp(
+        r"^-?([1-8]?\d(\.\d+)?|90(\.0+)?),\s*-?(1[0-7]\d(\.\d+)?|180(\.0+)?|\d{1,2}(\.\d+)?)$");
+    return gpsRegex.hasMatch(coordinateString);
+  }
+
   @override
   void initState() {
     super.initState();
@@ -412,8 +418,13 @@ class _MihBusinessCardState extends State<MihBusinessCard> {
                 );
               },
             ),
+            Visibility(
+              visible: isValidGps(widget.business.gps_location),
+              child: Column(
+                children: [
                   Divider(
-              color: MzansiInnovationHub.of(context)!.theme.primaryColor(),
+                    color:
+                        MzansiInnovationHub.of(context)!.theme.primaryColor(),
                   ),
                   _buildContactInfo(
                     "Location",
@@ -421,16 +432,19 @@ class _MihBusinessCardState extends State<MihBusinessCard> {
                     Icons.location_on,
                     MihColors.getOrangeColor(context),
                     () {
-                final latitude =
+                      final latitude = double.parse(
-                    double.parse(widget.business.gps_location.split(',')[0]);
+                          widget.business.gps_location.split(',')[0]);
-                final longitude =
+                      final longitude = double.parse(
-                    double.parse(widget.business.gps_location.split(',')[1]);
+                          widget.business.gps_location.split(',')[1]);
                       _launchGoogleMapsWithUrl(
                         latitude: latitude,
                         longitude: longitude,
                       );
                     },
                   ),
+                ],
+              ),
+            ),
             Visibility(
               visible: widget.business.website.isNotEmpty &&
                   widget.business.website != "",