Use error message from Redacted response

src/NzbDrone.Core/Indexers/Definitions/Redacted.cs

@@ -8,6 +8,7 @@ using FluentValidation;
 using NLog;
 using NzbDrone.Common.Extensions;
 using NzbDrone.Common.Http;
+using NzbDrone.Common.Serializer;
 using NzbDrone.Core.Annotations;
 using NzbDrone.Core.Configuration;
 using NzbDrone.Core.Indexers.Definitions.Gazelle;
@@ -252,7 +253,9 @@ namespace NzbDrone.Core.Indexers.Definitions
 
             if (indexerResponse.HttpResponse.StatusCode != HttpStatusCode.OK)
             {
-                throw new IndexerException(indexerResponse, $"Unexpected response status {indexerResponse.HttpResponse.StatusCode} code from indexer request");
+                STJson.TryDeserialize<RedactedErrorResponse>(indexerResponse.Content, out var errorResponse);
+
+                throw new IndexerException(indexerResponse, $"Unexpected response status {indexerResponse.HttpResponse.StatusCode} code from indexer request: {errorResponse?.Error ?? "Check the logs for more information."}");
             }
 
             if (!indexerResponse.HttpResponse.Headers.ContentType.Contains(HttpAccept.Json.Value))
@@ -487,4 +490,9 @@ namespace NzbDrone.Core.Indexers.Definitions
         [FieldOption(Label = "Required", Hint = "Abort download if unable to use token")]
         Required = 2,
     }
+
+    public class RedactedErrorResponse
+    {
+        public string Error { get; init; }
+    }
 }