Alguém poderia estar me ajudando com esse erro ? !

Deprecated: Non-static method ldPanelUser::classNameDefine() should not be called statically, assuming $this from incompatible context in /home/muglo390/public_html/Site/modules/classes/ldrankings.class.php on line 139

Deprecated: Non-static method ldPanelUser::checkOnlineAccount() should not be called statically, assuming $this from incompatible context in /home/muglo390/public_html/Site/modules/classes/ldrankings.class.php on line 159