Media upload return unknown error and second have no response

Which Umbraco version are you using? (Please write the exact version, example: 10.1.0)

11.4

Bug summary

In appsetting, I have add "Runtime": { "MaxQueryStringLength": 90, "MaxRequestLength": 1000 } which restrict upload over 1mb The first time, when I upload 3mb file, it return Error: An unknown error occurred Max file size is “1000KB” as expected, but the second time, it have no response, when I inspected, the console have provide error like below :

`data":{"ExceptionMessage":"Object reference not set to an instance of an object.","ExceptionType":"System.NullReferenceException, 
System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e","StackTrace":"   
at Umbraco.Cms.Web.BackOffice.Controllers.MediaController.PostAddFile(String path, String currentFolder, String contentTypeAlias, List`1 file)\r\n   
at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.TaskOfIActionResultExecutor.Execute(ActionContext actionContext, IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)\r\n   
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Logged|12_1(ControllerActionInvoker invoker)\r\n   
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\r\n   
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)\r\n   
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)\r\n   
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeInnerFilterAsync>g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\r\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextExceptionFilterAsync>g__Awaited|26_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)"},"status":500,"config":{"method":"POST","transformRequest":[null],"transformResponse":[null],"jsonpCallbackParam":"callback","url":"/umbraco/backoffice/umbracoapi/media/PostAddFile","fields":{"currentFolder":"11025","contentTypeAlias":"umbracoAutoSelect","propertyAlias":"umbracoFile"},"file":{"$error":"maxSize","$errorMessages":{"maxSize":true},"$errorParam":"1000KB","key":"04045f2b-fc30-4309-9b51-b9b1c6324901","messages":[]},"_isDigested":true,"_chunkSize":null,"headers":{"Accept":"application/json, text/plain, */*","X-Requested-With":"XMLHttpRequest","X-UMB-CULTURE":"en-GB","X-UMB-SEGMENT":null,"X-UMB-XSRF-TOKEN":"CfDJ8KHpP_QJKXFMo0vhgKjfj8vdhZvh9p3LDXtPeU4iBVidfCeAWGx_iSqMuJ8Zjs-gx8Dn1ZS3XHzO0iIkq5f7mqWYDL75-TggfqlOkK4cvK0kKwDVBKohy1_kOuvy4xlGX1aLbxrbfCotXaY4iDQaYM5M3mmTV0cztcWx57TRIHmE5-Q2usApF4Vudiyd5Zbh9g"},"_deferred":{"promise":{}}},"statusText":"","xhrStatus":"complete"}
(anonymous) @ angular.js:15697`

Specifics

No response

Steps to reproduce

In the appsetting the configuration is

"CMS": {
      "RuntimeMinification": {
        "UseInMemoryCache": true,
        "CacheBuster": "Timestamp"
      },
      "Runtime": {
        "MaxQueryStringLength": 90,
        "MaxRequestLength": 1000
      }
    }
  }

Upload the first big file can return error, but the second have no response

Expected result / actual result

It should always return error if file is oversize

[elit0451]

@laputaworkuk We are looking into this issue

[laputaworkuk]

Hi @elit0451 Thank you for your help, if you have any update, please let me know Thank you