Tomcat returns 404?

[UweP]

Hi. I have plesk12.5 and want to install jforum. so i renamed the jforum-2.1.9.zip to jforum-2.1.9.war and uploaded it. the application is installed but if i click ont he link in plesk to the application, it tells me:

HTTP Status 404 - /jforum-2.1.9/
type Status report

message /jforum-2.1.9/

description The requested resource is not available.

Apache Tomcat/7.0.56 (Debian)

Can someone help me? thanks ;D

 

[UweP]

This is from the logs:
INFO: Deploying web application archive /var/lib/tomcat7/psa-webapps/freakyonline.de/jforum-2.1.9.war
Oct 8, 2015 4:57:10 PM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deployment of web application archive /var/lib/tomcat7/psa-webapps/freakyonline.de/jforum-2.1.9.war has finished in 312 ms
Oct 8, 2015 4:57:10 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-127.0.0.1-9008"]
Oct 8, 2015 4:57:10 PM org.apache.catalina.connector.MapperListener findDefaultHost
WARNING: Unknown default host [localhost] for connector [Connector[AJP/1.3-9008]]
Oct 8, 2015 4:57:10 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-9080"]
Oct 8, 2015 4:57:10 PM org.apache.catalina.connector.MapperListener findDefaultHost
WARNING: Unknown default host [localhost] for connector [Connector[HTTP/1.1-9080]]
Oct 8, 2015 4:57:10 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 1079 ms