Exception of type 'System.ArgumentException' was thrown. Parameter name: name

System.ArgumentException: Exception of type 'System.ArgumentException' was thrown. Parameter name: name

System.ArgumentException: Exception of type 'System.ArgumentException' was thrown.
Parameter name: name
   at Elmah.JsonTextWriter.Member(String name)
   at Elmah.ErrorJson.Member(JsonTextWriter writer, String name, NameValueCollection collection)
   at Elmah.ErrorJson.Encode(Error error, JsonTextWriter writer)
   at Elmah.ErrorJson.EncodeEnclosed(Error error, JsonTextWriter writer)
   at Elmah.Mvc.ElmahResult.ExecuteResult(ControllerContext context)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)

Logged on Monday, April 6, 2026 at 2:36:11 PM

See also:

Server Variables

NameValue
ALL_HTTPHTTP_CONNECTION:close HTTP_ACCEPT_ENCODING:gzip,deflate HTTP_HOST:www.semsark.com HTTP_USER_AGENT:Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
ALL_RAWConnection: close Accept-Encoding: gzip,deflate Host: www.semsark.com User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
APPL_MD_PATH/LM/W3SVC/4/ROOT
APPL_PHYSICAL_PATHC:\inetpub\wwwroot\Semsark2\
AUTH_PASSWORD*****
AUTH_TYPE
AUTH_USER
CERT_COOKIE
CERT_FLAGS
CERT_ISSUER
CERT_KEYSIZE256
CERT_SECRETKEYSIZE2048
CERT_SERIALNUMBER
CERT_SERVER_ISSUERC=US, O=Let's Encrypt, CN=R13
CERT_SERVER_SUBJECTCN=www.semsark.com
CERT_SUBJECT
CONTENT_LENGTH0
CONTENT_TYPE
GATEWAY_INTERFACECGI/1.1
HTTP_ACCEPT_ENCODINGgzip,deflate
HTTP_CONNECTIONclose
HTTP_HOSTwww.semsark.com
HTTP_USER_AGENTMozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
HTTPSon
HTTPS_KEYSIZE256
HTTPS_SECRETKEYSIZE2048
HTTPS_SERVER_ISSUERC=US, O=Let's Encrypt, CN=R13
HTTPS_SERVER_SUBJECTCN=www.semsark.com
INSTANCE_ID4
INSTANCE_META_PATH/LM/W3SVC/4
LOCAL_ADDR172.31.24.199
LOGON_USER
PATH_INFO/elmah/.json
PATH_TRANSLATEDC:\inetpub\wwwroot\Semsark2\elmah
QUERY_STRINGid=9942DBC1-0C6E-4346-A992-29E62451D7B8
REMOTE_ADDR3.229.95.193
REMOTE_HOST3.229.95.193
REMOTE_PORT49165
REMOTE_USER
REQUEST_METHODGET
SCRIPT_NAME/elmah
SERVER_NAMEwww.semsark.com
SERVER_PORT443
SERVER_PORT_SECURE1
SERVER_PROTOCOLHTTP/1.1
SERVER_SOFTWAREMicrosoft-IIS/10.0
URL/elmah