addLine results in Null check operator used on a null value

[Matix-Media]

I am currently trying to add lines to my map, but whenever I try that I get following error in my console:

E/flutter ( 9956): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9956): #0      MaplibreMapController.addLine (package:maplibre_gl/src/controller.dart:805:22)
E/flutter ( 9956): #1      _ActiveRideCardState.build.<anonymous closure>.<anonymous closure> (package:fahrtenbuch_flutter/widgets/active_ride_card.dart:64:42)
E/flutter ( 9956): #2      _MaplibreMapState.onPlatformViewCreated (package:maplibre_gl/src/maplibre_map.dart:335:27)
E/flutter ( 9956): <asynchronous suspension>

This is the code for adding a new line;

                    onMapCreated: (controller) async {
                      OwnActiveRide activeRide = ridesStore.activeRide as OwnActiveRide;
                      LatLng? lastCheckpoint;
                      
                      for (LatLng checkpoint in activeRide.checkpoints) {
                        if (lastCheckpoint == null) {
                          lastCheckpoint = checkpoint;
                          continue;
                        }

                        print("Adding line from ${lastCheckpoint.toString()} to ${checkpoint.toString()}");
                        await controller.addLine(LineOptions(
                          draggable: false,
                          lineColor: "#ffffff",
                          lineWidth: 15,
                          geometry: [
                            lastCheckpoint,
                            checkpoint
                          ]
                        ));

                        lastCheckpoint = checkpoint;
                      }

[m0nac0]

Does this happen before or after the onStyleLoadedCallback has fired?

[Matix-Media]

Okay, so I moved the line code into onStyleLoadedCallback. And now it works. It is weird to setup though, since I have to export the controller out of the onMapCreated (callback) to use it in the onStyleLoadedCallback.

Edit: Nvm, I can just attach the callback to the controller directly.