When i building jira 4.3.3 source i get this error message. How to fix this ????
[INFO] nb warnings: 0, nb errors: 0
[INFO] [compiler:compile {execution: default-compile}]
[INFO] Compiling 239 source files to /home/mihan/Desktop/source/atlassian-jira-4.3.3-source/jira-importers-plugin/target/classes
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Compilation failure
/home/mihan/Desktop/source/atlassian-jira-4.3.3-source/jira-importers-plugin/src/main/java/com/atlassian/jira/plugins/importer/external/ExternalUtils.java:[310,27] incompatible types
found : com.opensymphony.user.Group
required: com.atlassian.crowd.embedded.api.Group