( ! ) Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /var/www/tokyo/wp-content/themes/chico-child/shortcodes/textbookdownload.php:166) in /var/www/tokyo/wp-content/themes/chico-child/functions.php on line 37
Call Stack
#	Time	Memory	Function	Location
1	0.0000	225264	{main}( )	../index.php:0
2	0.0001	225704	require( '/var/www/tokyo/wp-blog-header.php' )	../index.php:17
3	0.0001	226632	require_once( '/var/www/tokyo/wp-load.php' )	../wp-blog-header.php:13
4	0.0001	227536	require_once( '/var/www/tokyo/wp-config.php' )	../wp-load.php:37
5	0.0002	230888	require_once( '/var/www/tokyo/wp-settings.php' )	../wp-config.php:88
6	0.0886	11310536	do_action( )	../wp-settings.php:448
7	0.0886	11311208	WP_Hook->do_action( )	../plugin.php:453
8	0.0886	11311304	WP_Hook->apply_filters( )	../class-wp-hook.php:323
9	0.1205	11532160	call_user_func_array ( )	../class-wp-hook.php:298
10	0.1205	11532536	myStartSession( )	../class-wp-hook.php:298
11	0.1205	11532584	session_start ( )	../functions.php:37