Fatal error: Assignments can only happen to writable values in /data/sites/gov.mo/wp-content/mu-plugins/zzz-govmo-tmp-trace.php on line 2

Fatal error: Uncaught Error: Call to undefined function is_user_logged_in() in /data/sites/gov.mo/wp-content/mu-plugins/govmo-wpdie-tracer.php:10 Stack trace: #0 /data/sites/gov.mo/wp-includes/functions.php(3831): {closure}(Object(WP_Error), '', Array) #1 /data/sites/gov.mo/wp-includes/class-wp-fatal-error-handler.php(245): wp_die(Object(WP_Error), '', Array) #2 /data/sites/gov.mo/wp-includes/class-wp-fatal-error-handler.php(156): WP_Fatal_Error_Handler->display_default_error_template(Array, false) #3 /data/sites/gov.mo/wp-includes/class-wp-fatal-error-handler.php(60): WP_Fatal_Error_Handler->display_error_template(Array, false) #4 [internal function]: WP_Fatal_Error_Handler->handle() #5 {main} thrown in /data/sites/gov.mo/wp-content/mu-plugins/govmo-wpdie-tracer.php on line 10