Cannot call method isMemberOf on a non-object hatası alıyorum

#0 [internal function]: XF\Template\Templater->handleTemplateError(512, '[E_USER_WARNING...', '/var/www/vhosts...', 1179, Array)

#1 src/XF/Template/Templater.php(1179): trigger_error('Cannot call met...', 512)

#2 internal_data/code_cache/templates/l5/s2/public/message_macros.php(39): XF\Template\Templater->method(NULL, 'isMemberOf', Array)

#3 src/XF/Template/Templater.php(827): XF\Template\Templater->{closure}(Object(xenMade\TPM\XF\Template\Templater), Array, NULL)...