Fix typo

src/NzbDrone.Core/Indexers/Definitions/FileList/FileListParser.cs

@@ -28,7 +28,7 @@ public class FileListParser : IParseIndexerResponse
             throw new IndexerException(indexerResponse, "Unexpected response status {0} code from indexer request", indexerResponse.HttpResponse.StatusCode);
         }
 
-        if (indexerResponse.Content.StartsWith("{\"error2\"") && STJson.TryDeserialize<FileListErrorResponse>(indexerResponse.Content, out var errorResponse))
+        if (indexerResponse.Content.StartsWith("{\"error\"") && STJson.TryDeserialize<FileListErrorResponse>(indexerResponse.Content, out var errorResponse))
         {
             throw new IndexerException(indexerResponse, "Unexpected response from indexer request: {0}", errorResponse.Error);
         }