Fatal error: Uncaught TypeError: call\_user\_func\_array(): Argument #1 ($callback) must be a valid callback, function “wp\_enqueue\_emoji\_styles” not found or invalid function name in /home/u554490678/domains/e-shopmedamedic.com/public\_html/wp-includes/class-wp-hook.php:324 Stack trace: #0 /home/u554490678/domains/e-shopmedamedic.com/public\_html/wp-includes/class-wp-hook.php(348): WP\_Hook->apply\_filters() #1 /home/u554490678/domains/e-shopmedamedic.com/public\_html/wp-includes/plugin.php(517): WP\_Hook->do\_action() #2 /home/u554490678/domains/e-shopmedamedic.com/public\_html/wp-admin/admin-header.php(118): do\_action() #3 /home/u554490678/domains/e-shopmedamedic.com/public\_html/wp-admin/admin.php(239): require\_once(‘/home/u55449067…’) #4 {main} thrown in /home/u554490678/domains/e-shopmedamedic.com/public\_html/wp-includes/class-wp-hook.php on line 324
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You installed an obsolete or problematic plugin.
Get into ftp and into the plugins folder. Change the name of all folders to force a deactivation on every plugin.