Fixed the preset themes issue

src/Ombi/ClientApp/app/services/service.helpers.ts

@@ -55,6 +55,14 @@ export class ServiceAuthHelpers {
         }
     }
 
+    protected extractContentData(res: Response) {
+        if(res.text()) {
+            return res.text();
+        } else {
+            return "";
+        }
+    }
+
     protected handleError(error: any) {
         // In a real world app, we might use a remote logging infrastructure
         // We'd also dig deeper into the error to get a better message

src/Ombi/ClientApp/app/services/settings.service.ts

@@ -129,7 +129,7 @@ export class SettingsService extends ServiceAuthHelpers {
     }
 
     public getThemeContent(themeUrl: string): Observable<string> {
-        return this.httpAuth.get(`${this.url}/themecontent?url=${themeUrl}`).map(this.extractData).catch(this.handleError);
+        return this.httpAuth.get(`${this.url}/themecontent?url=${themeUrl}`).map(this.extractContentData).catch(this.handleError);
     }
 
     public getEmailNotificationSettings(): Observable<IEmailNotificationSettings> {