Seam provides two different pages that can be useful for debugging applications. The Facelets Debug page which shows page-rendering errors, and the Seam Debug page which shows any uncaught application exceptions.
Enable the Facelets Debug Page:
In web.xml you set Facelets to development mode.
WEB-INF/web.xml
<context-param>
<param-name>facelets.DEVELOPMENT</param-name>
<param-value>true</param-value>
</context-param>
The Facelets debug page gives you the line number in [...]
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Software Development
