Fatal error:

Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 49152 bytes) in /home/sidhant2510/public_html/shop/wp-admin/custom-header.php on line 548

nw I am not able to access my admin page of wordpress……..wp-admin is showing above error. How to remove this plugin, plz??

https://ww.wp.xz.cn/plugins/wp-e-commerce/