i haven't updated any part of this wiki for at least two years. Any suggestions?
NON-VERBOSE ERROR MESSAGE:
MediaWiki internal error.
Original exception: [YA4P2hqluUbuv96omr44FQAAAUM] 2021-01-25 00:24:59: Fatal exception of type "UnexpectedValueException"
Exception caught inside exception handler.
Set $wgShowExceptionDetails = true; at the bottom of LocalSettings.php to show detailed debugging information.
=========
VERBOSE ERROR MESSAGE:
Notice: Undefined index: hideroot in /home/gunsywtx/public_html/LocalSettings.php on line 288
Warning: Use of undefined constant DB_SLAVE - assumed 'DB_SLAVE' (this will throw an Error in a future version of PHP) in /home/gunsywtx/public_html/extensions/ApprovedRevs/includes/ApprovedRevs_body.php on line 49
MediaWiki internal error.
Original exception: [YA4qJ--S@vJPOyAaBZI-1AAAAdA] /index.php/Main_Page UnexpectedValueException from line 462 of /home/gunsywtx/public_html/includes/libs/rdbms/loadbalancer/LoadBalancer.php: Invalid server index index #DB_SLAVE
Backtrace:
#0 /home/gunsywtx/public_html/includes/libs/rdbms/loadbalancer/LoadBalancer.php(896): Wikimedia\Rdbms\LoadBalancer->getConnectionIndex(string, array, string)
#1 /home/gunsywtx/public_html/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1043): Wikimedia\Rdbms\LoadBalancer->getConnection(string, array, string, integer)
#2 /home/gunsywtx/public_html/includes/GlobalFunctions.php(2556): Wikimedia\Rdbms\LoadBalancer->getMaintenanceConnectionRef(string, array, string)
#3 /home/gunsywtx/public_html/extensions/ApprovedRevs/includes/ApprovedRevs_body.php(49): wfGetDB(string)
#4 /home/gunsywtx/public_html/extensions/ApprovedRevs/includes/ApprovedRevs.hooks.php(192): ApprovedRevs::getApprovedRevID(Title)
#5 /home/gunsywtx/public_html/includes/Hooks.php(174): ApprovedRevsHooks::showApprovedRevision(Title, NULL, RequestContext)
#6 /home/gunsywtx/public_html/includes/Hooks.php(202): Hooks::callHook(string, array, array, NULL)
#7 /home/gunsywtx/public_html/includes/page/Article.php(167): Hooks::run(string, array)
#8 /home/gunsywtx/public_html/includes/page/Article.php(193): Article::newFromTitle(Title, RequestContext)
#9 /home/gunsywtx/public_html/includes/MediaWiki.php(411): Article::newFromWikiPage(WikiPage, RequestContext)
#10 /home/gunsywtx/public_html/includes/MediaWiki.php(300): MediaWiki->initializeArticle()
#11 /home/gunsywtx/public_html/includes/MediaWiki.php(854): MediaWiki->performRequest()
#12 /home/gunsywtx/public_html/includes/MediaWiki.php(527): MediaWiki->main()
#13 /home/gunsywtx/public_html/index.php(44): MediaWiki->run()
#14 {main}
Exception caught inside exception handler: [YA4qJ--S@vJPOyAaBZI-1AAAAdA] /index.php/Main_Page MWException from line 183 of /home/gunsywtx/public_html/includes/MagicWord.php: Error: invalid magic word 'lst'
Backtrace:
#0 /home/gunsywtx/public_html/includes/MagicWordFactory.php(222): MagicWord->load(string)
#1 /home/gunsywtx/public_html/includes/parser/Parser.php(5288): MagicWordFactory->get(string)
#2 /home/gunsywtx/public_html/extensions/LabeledSectionTransclusion/LabeledSectionTransclusion.class.php(13): Parser->setFunctionHook(string, array, integer)
#3 /home/gunsywtx/public_html/includes/Hooks.php(174): LabeledSectionTransclusion::setup(Parser)
#4 /home/gunsywtx/public_html/includes/Hooks.php(202): Hooks::callHook(string, array, array, NULL)
#5 /home/gunsywtx/public_html/includes/parser/Parser.php(476): Hooks::run(string, array)
#6 /home/gunsywtx/public_html/includes/cache/MessageCache.php(1189): Parser->firstCallInit()
#7 /home/gunsywtx/public_html/includes/cache/MessageCache.php(1165): MessageCache->getParser()
#8 /home/gunsywtx/public_html/includes/language/Message.php(1280): MessageCache->transform(string, boolean, LanguageEn, Title)
#9 /home/gunsywtx/public_html/includes/language/Message.php(884): Message->transformText(string)
#10 /home/gunsywtx/public_html/includes/language/Message.php(944): Message->toString(string)
#11 /home/gunsywtx/public_html/includes/OutputPage.php(888): Message->text()
#12 /home/gunsywtx/public_html/includes/OutputPage.php(937): OutputPage->setHTMLTitle(Message)
#13 /home/gunsywtx/public_html/includes/OutputPage.php(2610): OutputPage->setPageTitle(string)
#14 /home/gunsywtx/public_html/includes/exception/MWExceptionRenderer.php(125): OutputPage->prepareErrorPage(string)
#15 /home/gunsywtx/public_html/includes/exception/MWExceptionRenderer.php(53): MWExceptionRenderer::reportHTML(UnexpectedValueException)
#16 /home/gunsywtx/public_html/includes/exception/MWExceptionHandler.php(121): MWExceptionRenderer::output(UnexpectedValueException, integer)
#17 /home/gunsywtx/public_html/includes/exception/MWExceptionHandler.php(195): MWExceptionHandler::report(UnexpectedValueException)
#18 /home/gunsywtx/public_html/includes/MediaWiki.php(558): MWExceptionHandler::handleException(UnexpectedValueException)
#19 /home/gunsywtx/public_html/index.php(44): MediaWiki->run()
#20 {main}