Fatal error: PHP error in file /www/htdocs/w0097cc0/jagd24/wcf/lib/page/PartnerPage.class.php (160): Non-static method Partner::getPackageVersion() should not be called statically, assuming $this from incompatible context

Information:

error message: PHP error in file /www/htdocs/w0097cc0/jagd24/wcf/lib/page/PartnerPage.class.php (160): Non-static method Partner::getPackageVersion() should not be called statically, assuming $this from incompatible context
error code: 0
file: /www/htdocs/w0097cc0/jagd24/wcf/lib/system/WCF.class.php (281)
php version: 5.6.40-nmm7
wcf version: 1.1.10 (Tempest)
date: Thu, 18 Apr 2024 17:06:31 +0000
request: /index.php?page=Partner&s=d90b20e825f9e58bb2cbec75b25878545cbb0ec1
referer:

Stacktrace:

#0 /www/htdocs/w0097cc0/jagd24/wcf/lib/page/PartnerPage.class.php(160): WCF::handleError(8192, 'Non-static meth...', '/www/htdocs/w00...', 160, Array)
#1 /www/htdocs/w0097cc0/jagd24/wcf/lib/page/AbstractPage.class.php(93): PartnerPage->assignVariables()
#2 /www/htdocs/w0097cc0/jagd24/wcf/lib/page/PartnerPage.class.php(174): AbstractPage->show()
#3 /www/htdocs/w0097cc0/jagd24/wcf/lib/page/AbstractPage.class.php(46): PartnerPage->show()
#4 /www/htdocs/w0097cc0/jagd24/wcf/lib/page/PartnerPage.class.php(83): AbstractPage->__construct()
#5 /www/htdocs/w0097cc0/jagd24/wcf/lib/util/RequestHandler.class.php(64): PartnerPage->__construct()
#6 /www/htdocs/w0097cc0/jagd24/wcf/lib/util/RequestHandler.class.php(92): RequestHandler->__construct('Partner', Array, 'page')
#7 /www/htdocs/w0097cc0/jagd24/index.php(8): RequestHandler::handle(Array)
#8 {main}