diff --git a/com.adsbynimbus.nimbus/Runtime/Scripts/Nimbus.Internal/Network/NimbusClient.cs b/com.adsbynimbus.nimbus/Runtime/Scripts/Nimbus.Internal/Network/NimbusClient.cs
index 2149f29d..cefe71bf 100644
--- a/com.adsbynimbus.nimbus/Runtime/Scripts/Nimbus.Internal/Network/NimbusClient.cs
+++ b/com.adsbynimbus.nimbus/Runtime/Scripts/Nimbus.Internal/Network/NimbusClient.cs
@@ -62,8 +62,28 @@ public async Task<string> MakeRequestAsync(BidRequest bidRequest) {
 					return "{\"message\": \"Application Closed\"}";
 				}
 				var nimbusResponse = await serverResponse.Content.ReadAsStringAsync();
-#endif
-
+				if (nimbusResponse.IsNullOrEmpty())
+				{
+					switch ((int)serverResponse.StatusCode)
+					{
+						case 400:
+							nimbusResponse = "{\"status_code\": 400, \"message\": \"POST data was malformed\"}";
+							break;
+						case 404:
+							nimbusResponse = "{\"status_code\": 404,\"message\": \"No bids returned\"}";
+							break;
+						case 429:
+							nimbusResponse = "{\"status_code\": 429,\"message\": \"Rate limited\"}";
+							break;
+						case 500:
+							nimbusResponse = "{\"status_code\": 500,\"message\": \"Server is unavailable\"}";
+							break;
+						default:
+							nimbusResponse = $"{{\"status_code\": {(int)serverResponse.StatusCode},\"message\": \"Unknown network error occurred\"}}";
+							break;
+					}
+				}
+				#endif
 				return nimbusResponse;
 			});
 		}
diff --git a/com.adsbynimbus.nimbus/Runtime/Scripts/Nimbus.Internal/NimbusAdUnit.cs b/com.adsbynimbus.nimbus/Runtime/Scripts/Nimbus.Internal/NimbusAdUnit.cs
index d88de2fc..17530b0f 100644
--- a/com.adsbynimbus.nimbus/Runtime/Scripts/Nimbus.Internal/NimbusAdUnit.cs
+++ b/com.adsbynimbus.nimbus/Runtime/Scripts/Nimbus.Internal/NimbusAdUnit.cs
@@ -117,17 +117,8 @@ await Task.Run(async () => {
 				try {
 					response = await jsonBody;
 				} catch (Exception e) { }
-
-				if (String.IsNullOrEmpty(response)) {
-					var networkError = new ErrResponse();
-					networkError.Id = "";
-					networkError.StatusCode = 0;
-					networkError.Message = "Unknown network error occurred";
-					ErrResponse = networkError;
-					_adEvents.FireOnAdErrorEvent(this);
-					return;
-				}
 				if (response.Contains("message")) {
+					Debug.unityLogger.Log("Nimbus",$"RESPONSE ERROR: {response}");
 					ErrResponse = JsonConvert.DeserializeObject<ErrResponse>(response);
 					_adEvents.FireOnAdErrorEvent(this);
 					return;