While posting a question, please use a more meaningful title. Also while posting logs, xml, code, please wrap them in a code block (you can use the code button in this forum editor window) for better formatting.
As for the exception:
19:26:53,761 ERROR [WebModule] Could not create JSR-77 WebModule: web.xml: javax.management.InstanceAlreadyExistsException: jboss.management.local:j2eeType=WebModule,J2EEServer=Local,J2EEApplication=null,name=web.xml already registered.
It looks like you are deploying an application which is already deployed. The name of that application "web.xml" looks suspicious though. Can you provide more details about your application including what it is and how it is packaged?