Fatal error: Uncaught TypeError: preg_match(): Argument #2 ($subject) must be of type string, array given in /xp/www/hj/wp-content/themes/cailiao/page-templates/material-details.php:638
Stack trace:
#0 /xp/www/hj/wp-content/themes/cailiao/page-templates/material-details.php(638): preg_match()
#1 /xp/www/hj/wp-content/themes/cailiao/page-templates/material-details.php(196): render_material_full_table_raw()
#2 /xp/www/hj/wp-content/themes/cailiao/page-templates/material-details.php(87): display_material_details()
#3 /xp/www/hj/wp-includes/template-loader.php(106): include('...')
#4 /xp/www/hj/wp-blog-header.php(19): require_once('...')
#5 /xp/www/hj/index.php(17): require('...')
#6 {main}
thrown in /xp/www/hj/wp-content/themes/cailiao/page-templates/material-details.php on line 638
