Caused by: java.lang.IllegalArgumentException: no such field: org.jboss.seam.ui.EntityConverter.entityManager
Solution:
If you have something similar to the following in your component.xml
<component name="org.jboss.seam.ui.EntityConverter">
<property name="entityManager">#{em}</property>
</component>
please change it to<property name="entityManager">#{em}</property>
</component>
<ui:jpa-entity-loader entity-manager="#{em}" />
Dont forget to add xmlns:ui="http://jboss.com/products/seam/ui" on the top of the file to components