Erro interno

[ZiE9uvvZiMjBTj52nTZxZwAAAUw] /index.php?title=Parque_Estadual_Serra_Verde&action=edit MWException from line 164 of /home/wikiparq/public_html/includes/Hooks.php: Invalid callback MyExtensionHooks::onEditPageGetCheckboxesDefinition in hooks for EditPageGetCheckboxesDefinition

Backtrace:

#0 /home/wikiparq/public_html/includes/Hooks.php(202): Hooks::callHook(string, array, array, NULL)
#1 /home/wikiparq/public_html/includes/EditPage.php(4166): Hooks::run(string, array)
#2 /home/wikiparq/public_html/includes/EditPage.php(4183): EditPage->getCheckboxesDefinition(array)
#3 /home/wikiparq/public_html/includes/EditPage.php(3706): EditPage->getCheckboxesWidget(integer, array)
#4 /home/wikiparq/public_html/includes/EditPage.php(2963): EditPage->showStandardInputs()
#5 /home/wikiparq/public_html/includes/EditPage.php(712): EditPage->showEditForm()
#6 /home/wikiparq/public_html/includes/actions/EditAction.php(60): EditPage->edit()
#7 /home/wikiparq/public_html/includes/MediaWiki.php(499): EditAction->show()
#8 /home/wikiparq/public_html/includes/MediaWiki.php(294): MediaWiki->performAction(Article, Title)
#9 /home/wikiparq/public_html/includes/MediaWiki.php(865): MediaWiki->performRequest()
#10 /home/wikiparq/public_html/includes/MediaWiki.php(515): MediaWiki->main()
#11 /home/wikiparq/public_html/index.php(42): MediaWiki->run()
#12 {main}