aggregate headers are case sensitive

aspnet-core/LINGYUN.MicroService.sln

@@ -249,7 +249,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LINGYUN.Abp.PermissionManag
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LINGYUN.Abp.PermissionManagement.Domain.Identity", "modules\identity\LINGYUN.Abp.PermissionManagement.Domain.Identity\LINGYUN.Abp.PermissionManagement.Domain.Identity.csproj", "{2D377D3A-70EC-4BB3-9F4C-6C933693DA98}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LINGYUN.Abp.Account.Web", "modules\account\LINGYUN.Abp.Account.Web\LINGYUN.Abp.Account.Web.csproj", "{5F43141B-6C63-4547-B9D6-D69EC3D7CA7E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LINGYUN.Abp.Account.Web", "modules\account\LINGYUN.Abp.Account.Web\LINGYUN.Abp.Account.Web.csproj", "{5F43141B-6C63-4547-B9D6-D69EC3D7CA7E}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

aspnet-core/services/apigateway/LINGYUN.ApiGateway.Host/Ocelot/Middleware/Multiplexer/AbpApiDefinitionAggregator.cs

@@ -20,9 +20,11 @@ namespace Ocelot.Middleware.Multiplexer
         protected virtual async Task<DownstreamResponse> MapAbpApiDefinitionAggregateContentAsync(List<HttpContext> responses)
         {
             JObject responseObject = null;
-            JsonMergeSettings mergeSetting = new JsonMergeSettings();
-            mergeSetting.MergeArrayHandling = MergeArrayHandling.Union;
-            mergeSetting.PropertyNameComparison = System.StringComparison.CurrentCultureIgnoreCase;
+            JsonMergeSettings mergeSetting = new JsonMergeSettings
+            {
+                MergeArrayHandling = MergeArrayHandling.Union,
+                PropertyNameComparison = System.StringComparison.CurrentCultureIgnoreCase
+            };
             foreach (var httpResponse in responses)
             {
                 var content = await httpResponse.Items.DownstreamResponse().Content.ReadAsStringAsync();
@@ -40,7 +42,7 @@ namespace Ocelot.Middleware.Multiplexer
             {
                 Headers = { ContentType = new MediaTypeHeaderValue("application/json") }
             };
-            stringContent.Headers.Add("_abperrorformat", "true");
+            stringContent.Headers.Add("_AbpErrorFormat", "true");
             return new DownstreamResponse(stringContent, HttpStatusCode.OK,
                 new List<KeyValuePair<string, IEnumerable<string>>>(), "OK");
         }