Fix critical error

frontend/src/routes/map/+page.server.ts

@@ -33,7 +33,8 @@ export const load = (async (event) => {
 					return {
 						lngLat: [adventure.longitude, adventure.latitude] as [number, number],
 						name: adventure.name,
-						type: adventure.type
+						type: adventure.type,
+						collection: adventure.collection
 					};
 				});
 

frontend/src/routes/map/+page.svelte

@@ -19,6 +19,7 @@
 
 	let showVisited = true;
 	let showPlanned = true;
+	let showCollectionAdventures = false;
 
 	$: {
 		if (!showVisited) {
@@ -33,6 +34,12 @@
 			const plannedMarkers = data.props.markers.filter((marker) => marker.type === 'planned');
 			markers = [...markers, ...plannedMarkers];
 		}
+		if (!showCollectionAdventures) {
+			markers = markers.filter((marker) => marker.collection === null);
+		} else {
+			const collectionMarkers = data.props.markers.filter((marker) => marker.collection !== null);
+			markers = [...markers, ...collectionMarkers];
+		}
 	}
 
 	let newMarker = [];
@@ -117,6 +124,14 @@
 	<span class="label-text">Planned</span>
 	<input type="checkbox" bind:checked={showPlanned} class="checkbox checkbox-primary" />
 </label>
+<label class="label cursor-pointer">
+	<span class="label-text">Collection Adventures</span>
+	<input
+		type="checkbox"
+		bind:checked={showCollectionAdventures}
+		class="checkbox checkbox-primary"
+	/>
+</label>
 
 {#if newMarker.length > 0}
 	<button type="button" class="btn btn-primary mb-2" on:click={() => (createModalOpen = true)}