Error: {"message":"strpos(): Argument #1 ($haystack) must be of type string, array given","file":"/core/Period/Range.php","line":525,"request_id":"a48e4","backtrace":" on /core/Period/Range.php(525)\n#0 /core/Period/Range.php(525): strpos(Array, '-')\n#1 /plugins/ImageGraph/ImageGraph.php(92): Piwik\Period\Range::getRelativeToEndDate('day', 'last30', Array, Object(Piwik\Site))\n#2 [internal function]: Piwik\Plugins\ImageGraph\ImageGraph->getReportMetadata(Array, Array)\n#3 /core/EventDispatcher.php(141): call_user_func_array(Array, Array)\n#4 /core/Piwik.php(845): Piwik\EventDispatcher->postEvent('API.getReportMe...', Array, false, Array)\n#5 /plugins/API/ProcessedReport.php(221): Piwik\Piwik::postEvent('API.getReportMe...', Array)\n#6 /plugins/API/API.php(276): Piwik\Plugins\API\ProcessedReport->getReportMetadata('1', 'day', Array, false, false)\n#7 /core/Plugin/Controller.php(429): Piwik\Plugins\API\API->getReportMetadata('1', 'day', Array)\n#8 /plugins/VisitsSummary/Controller.php(121): Piwik\Plugin\Controller->getLastUnitGraphAcrossPlugins('VisitsSummary', 'getEvolutionGra...', false, Array, 'This is an over...')\n#9 [internal function]: Piwik\Plugins\VisitsSummary\Controller->getEvolutionGraph()\n#10 /core/FrontController.php(623): call_user_func_array(Array, Array)\n#11 /core/FrontController.php(168): Piwik\FrontController->doDispatch('VisitsSummary', 'getEvolutionGra...', Array)

URL: https://demo.matomo.cloud/index.php?action=getEvolutionGraph&date%5B0%5D=exp&date%5B1%5D=%3D1%E9%8E%88%27%22%5C%28&disableLink=0&forceView=1&idSite=1&module=VisitsSummary&period=day&viewDataTable=graphEvolution&widget=1

Referrer: https://demo.matomo.cloud/index.php?module=CoreHome&action=index&idSite=1&period=day&date=yesterday

GET: {"action":"getEvolutionGraph","date":["exp","=1\u9388'"\("],"disableLink":"0","forceView":"1","idSite":"1","module":"VisitsSummary","period":"day","viewDataTable":"graphEvolution","widget":"1"}

Happens on PHP 8