The error message says that during the creation of a weblog page the insert in the the automically generated view xowiki_objecti fails (this view should insert the key in the supertype xowiki_plain_page as well).
i am wondering about the following line from your error message:
(procedure "db_dml" line 100)
in acs-5-3, the insert operation should be a db_0or1row and not a db_dml! The command name should be returned by
::Generic::CrItem set insert_view_operation
in ds/shell in the oacs-5-3 branch. What version of the acs-content-repository have you installed? did you run the update scripts for the content-repository?