MediaWiki API result

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{
    "error": {
        "code": "internal_api_error_Wikimedia\\Assert\\PreconditionException",
        "info": "[Z2hfrkIIHLM41-UH9uitQgAAAL4] Exception caught: Precondition failed: This Title instance does not represent a proper page, but merely a link target.",
        "errorclass": "Wikimedia\\Assert\\PreconditionException",
        "*": "Wikimedia\\Assert\\PreconditionException at /home3/bestprac/public_html/vendor/wikimedia/assert/src/Assert.php(49)\nfrom /home3/bestprac/public_html/vendor/wikimedia/assert/src/Assert.php(49)\n#0 /home3/bestprac/public_html/includes/Title.php(4258): Wikimedia\\Assert\\Assert::precondition(boolean, string)\n#1 /home3/bestprac/public_html/includes/Title.php(4241): Title->assertProperPage()\n#2 /home3/bestprac/public_html/includes/Revision/RevisionStore.php(1785): Title->getId(boolean)\n#3 /home3/bestprac/public_html/includes/Revision/RevisionStore.php(1690): MediaWiki\\Revision\\RevisionStore->ensureRevisionRowMatchesPage(stdClass, Title)\n#4 /home3/bestprac/public_html/includes/Revision/RevisionStore.php(1566): MediaWiki\\Revision\\RevisionStore->newRevisionFromRowAndSlots(stdClass, NULL, integer, Title, boolean)\n#5 /home3/bestprac/public_html/includes/api/ApiFeedContributions.php(229): MediaWiki\\Revision\\RevisionStore->newRevisionFromRow(stdClass, integer, Title)\n#6 /home3/bestprac/public_html/includes/api/ApiFeedContributions.php(198): ApiFeedContributions->feedItem(stdClass)\n#7 /home3/bestprac/public_html/includes/api/ApiMain.php(1874): ApiFeedContributions->execute()\n#8 /home3/bestprac/public_html/includes/api/ApiMain.php(853): ApiMain->executeAction()\n#9 /home3/bestprac/public_html/includes/api/ApiMain.php(824): ApiMain->executeActionWithErrorHandling()\n#10 /home3/bestprac/public_html/api.php(90): ApiMain->execute()\n#11 /home3/bestprac/public_html/api.php(45): wfApiMain()\n#12 {main}"
    }
}