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java.lang.ClassCastException: com.atlassian.confluence.pages.BlogPost	at com.atlassian.confluence.pages.AbstractPage.getNumberedVersion(AbstractPage.java:119)	at com.atlassian.confluence.pages.actions.AbstractEditPageAction.handleVersionConflict(AbstractEditPageAction.java:207)	at com.atlassian.confluence.pages.actions.AbstractEditPageAction.doEdit(AbstractEditPageAction.java:137)	at com.atlassian.confluence.pages.actions.EditBlogPostAction.doEdit(EditBlogPostAction.java:16)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:324)