Error logging--flex call remoting failed

Flex Call Remoting failed.
The error message is as follows:
(mx.messaging.messages::errormessage) #0
BODY = (Object) #1
ClientId = (NULL)
Correlationid = "2d787902-7186-d6a1-f049-8f739cc79c67"
Destination = ""
Extendeddata = (NULL)
FaultCode = "Client.Error.MessageSend"
Faultdetail = "Channel.Connect.Failed error NetConnection.Call.Failed:HTTP:Status 404:url: ' http://localhost:8080/ Webcontent/messagebroker/amf ' "
faultstring = "Send failed"
headers = (Object) #2
MessageID = "5d03a245-e531-fe7f-ffde-8f739d255904"
Rootcause = (mx.messaging.events::channelfaultevent) #3
Bubbles = False
Cancelable = False
Channel = (Mx.messaging.channels::amfchannel) #4
Authenticated = False
Channelsets = (Array) #5
[0] (Mx.messaging::channelset) #6
Authenticated = False
Channelids = (Array) #7
[0] "MY-AMF"
Channels = (Array) #8
[0] (Mx.messaging.channels::amfchannel) #4
Clustered = False
Connected = False
Currentchannel = (Mx.messaging.channels::amfchannel) #4
Initialdestinationid = (NULL)
Messageagents = (Array) #9
[0] (mx.rpc::asyncrequest) #10
Authenticated = False
AutoConnect = True
ChannelSet = (mx.messaging::channelset) #6
ClientId = (NULL)
Connected = False
Defaultheaders = (NULL)
Destination = "Helloremoting"
id = "eb72b9fc-d54e-d29c-db69-8f736df76188"
reconnectattempts = 0
Reconnectinterval = 0
Requesttimeout =-1
subtopic = ""
Connected = False
ConnectTimeout =-1
Enablesmallmessages = True
Endpoint = "HTTP://LOCALHOST:8080/WEBCONTENT/MESSAGEBROKER/AMF"
Failoveruris = (Array) #11
id = "MY-AMF"
Mpienabled = False
Netconnection = (flash.net::netconnection) #12
Client = (Mx.messaging.channels::amfchannel) #4
Connected = False
objectencoding = 3
Proxytype = "None"
URI = "HTTP://LOCALHOST:8080/WEBCONTENT/MESSAGEBROKER/AMF"
Piggybackingenabled = False
Polling = False
Pollingenabled = False
PollingInterval = 3000
protocol = "HTTP"
reconnecting = False
Recordmessagesizes = False
Recordmessagetimes = False
Requesttimeout =-1
URI = "HTTP://{SERVER.NAME}:{SERVER.PORT}/WEBCONTENT/MESSAGEBROKER/AMF"
url = "HTTP://{SERVER.NAME}:{SERVER.PORT}/WEBCONTENT/MESSAGEBROKER/AMF"
Usesmallmessages = False
Channelid = "MY-AMF"
Connected = False
Currenttarget = (Mx.messaging.channels::amfchannel) #4
Eventphase = 2
FaultCode = "Channel.Connect.Failed"
Faultdetail = "NetConnection.Call.Failed:HTTP:Status 404:url: ' HTTP://LOCALHOST:8080/WEBCONTENT/MESSAGEBROKER/AMF ' "
faultstring = "Error"
reconnecting = False
Rejected = False
Rootcause = (Object) #13
Code = "NetConnection.Call.Failed"
Description = "Http:status 404"
Details = "HTTP://LOCALHOST:8080/WEBCONTENT/MESSAGEBROKER/AMF"
Level = "Error"
target = (Mx.messaging.channels::amfchannel) #4
Type = "Channelfault"
Timestamp = 0
TimeToLive = 0

or error message:
FaultCode:Client.Error.MessageSend faultstring: ' Send failed ' faultdetail: ' Channel.Connect.Failed Error NetConnection.Call.Failed:HTTP:Status 404:url: ' HTTP://LOCALHOST:8080/WEBCONTENT/MESSAGEBROKER/AMF '

Solution:
Endpoint problem, in Services-config.xml file, due to this type of endpoint:
<endpoint url= "HTTP://{SERVER.NAME}:{SERVER.PORT}/{CONTEXT.ROOT}/MESSAGEBROKER/AMF" class= " Flex.messaging.endpoints.AMFEndpoint "/>, the {context.root} in is not getting the project name.

Workaround, select the item, right-click "Properties"--> "Flex Server"--> Change the contents of context root (the contextual path at browser access) to "/Project name",-->ok.