( ! ) Fatal error: Unknown: Cannot use output buffering in output buffering display handlers in Unknown on line 0
Call Stack
#	Time	Memory	Function	Location
1	0.9527	41077624	shutdown_action_hook( )	.../load.php:0
2	0.9527	41077672	do_action( )	.../load.php:1072
3	0.9527	41078760	WP_Hook->do_action( )	.../plugin.php:484
4	0.9527	41078856	WP_Hook->apply_filters( )	.../class-wp-hook.php:316
5	0.9527	41080008	call_user_func_array:{/home/users/1/kiln/web/kilnrestaurant.jp/wp/wp-includes/class-wp-hook.php:292} ( )	.../class-wp-hook.php:292
6	0.9527	41080376	wp_ob_end_flush_all( )	.../class-wp-hook.php:292
7	0.9527	41080520	ob_end_flush ( )	.../functions.php:4757
8	0.9527	41115016	autoptimize_end_buffering( )	.../functions.php:4757
9	0.9555	41243816	autoptimizeStyles->minify( )	.../autoptimize.php:266
10	0.9556	41303520	autoptimizeStyles::fixurls( )	.../autoptimizeStyles.php:186
11	0.9556	41303992	preg_replace ( )	.../autoptimizeStyles.php:583