Tolerate media players not in the entity registry.

src/card.ts

@@ -1154,9 +1154,12 @@ class FrigateCard extends LitElement {
 
     // Filter out entities that are marked as hidden (this information is not
     // available in the HA state, only in the registry).
-    this._mediaPlayers = [...mediaPlayerEntities.values()]
-      .filter((entity) => !entity.hidden_by)
-      .map((entity) => entity.entity_id);
+    this._mediaPlayers = mediaPlayers.filter((entityID) => {
+      // Specifically allow for media players that are not found in the entity registry:
+      // See: https://github.com/dermotduffy/frigate-hass-card/issues/1016
+      const entity = mediaPlayerEntities.get(entityID);
+      return !entity || !entity.hidden_by;
+    });
   }
 
   /**

src/utils/ha/entity-registry/index.ts

@@ -43,7 +43,14 @@ export class EntityRegistryManager {
   ): Promise<Map<string, Entity>> {
     const output: Map<string, Entity> = new Map();
     const _storeEntity = async (entityID: string): Promise<void> => {
-      const entity = await this.getEntity(hass, entityID);
+      let entity: Entity | null = null;
+      try {
+        entity = await this.getEntity(hass, entityID);
+      } catch {
+        // When asked to fetch multiple entities, ignore missing entities (they
+        // will just not feature in the output).
+        return;
+      }
       if (entity) {
         output.set(entityID, entity);
       }