Upload site logo on administration page setting dosn't work

Dear @asmecher,

Please Help me, When i’m upload logo on Administration page setting error because “The current role does not have access to this operation”. I use OJS 3.1.1-4


Error Log:
Declaration of PKPUsageEventPlugin::getEnabled() should be compatible with LazyLoadPlugin::getEnabled($contextId = NULL) in /home/iiaf7222/public_html/lib/pkp/plugins/generic/usageEvent/PKPUsageEventPlugin.inc.php on line 24

Thanks You.

Dear @ceperlan see this solution