add try/catch to remaining methods

src/loaders/ApiBasedRepositoryLoader.ts

@@ -156,6 +156,8 @@ export class ApiBasedRepositoryLoader {
     formData.set("json", JSON.stringify(formDataJsonObject));
 
     const query = new URLSearchParams(params).toString();
+
+    try {
       const response = await fetch(`${this.baseUrl}?${query}`, {
         method: "POST",
         body: formData,
@@ -180,7 +182,10 @@ export class ApiBasedRepositoryLoader {
           }
 
           await this.repository.addOrUpdateShuttle(constructedShuttle);
-      }))
+        }));
+      }
+    } catch(e: any) {
+      throw new ApiResponseError(e.message);
     }
   }
 
@@ -207,6 +212,8 @@ export class ApiBasedRepositoryLoader {
     };
 
     const query = new URLSearchParams(params).toString();
+
+    try {
       const response = await fetch(`${this.baseUrl}?${query}`, {
         method: "GET",
       });
@@ -228,6 +235,9 @@ export class ApiBasedRepositoryLoader {
           this.repository.addOrUpdateEta(eta);
         });
       }
+    } catch(e: any) {
+      throw new ApiResponseError(e.message);
+    }
   }
 
   protected async updateStopDataForSystemAndApiResponse(systemId: string, json: any) {