/home/runner/work/operatingsystem/operatingsystem/input/operatingsystem.xml:401:27: error: element "package-usage-list" not allowed here; expected the element end-tag, text, element "_", "assignable", "choice", "comment", "ctr", "depends", "endnote", "equation", "external-doc", "figure", "if-opt-app", "implements", "no-link", "provides", "refinement", "requires", "rule", "section", "selectables", "snip", "testlist" or "xref" or an element from another namespace
/home/runner/work/operatingsystem/operatingsystem/input/operatingsystem.xml:1714:25: error: element "center" not allowed anywhere; expected the element end-tag, text, element "_", "assignable", "choice", "comment", "ctr", "depends", "endnote", "equation", "evidence", "external-doc", "figure", "if-opt-app", "implements", "no-link", "provides", "refinement", "requires", "rule", "selectables", "snip", "test-obj", "testlist" or "xref" or an element from another namespace
/home/runner/work/operatingsystem/operatingsystem/input/operatingsystem.xml:1717:25: error: element "center" not allowed anywhere; expected the element end-tag, text, element "_", "assignable", "choice", "comment", "ctr", "depends", "endnote", "equation", "evidence", "external-doc", "figure", "if-opt-app", "implements", "no-link", "provides", "refinement", "requires", "rule", "selectables", "snip", "test-obj", "testlist" or "xref" or an element from another namespace
/home/runner/work/operatingsystem/operatingsystem/input/operatingsystem.xml:7972:119: error: value of attribute "id" is invalid; must be an XML name without colons