when i want to deploy my application in tomcat server it can't and this is the error message init: deps-module-jar: deps-ear-jar: deps-jar: library-inclusion-in-archive: library-inclusion-in-manifest: compile: compile-jsps: Undeploying ... undeploy?path=/Mango OK - Application non-déployée pour le chemin de contexte /Mango In-place deployment at D:\PFE\Mango\build\web deploy?config=file%3A%2FC%3A%2FUsers%2FBouali%2FAppData%2FLocal%2FTemp%2Fcontext4268238340729989227.xml&path=/Mango FAIL - Deployed application at context path /Mango but context failed to start D:\PFE\Mango\nbproject\build-impl.xml:847: The module has not been deployed. See the server log for details. BUILD FAILED (total time: 2 seconds) I await your answers in short delays. thank you in advance