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Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /home/powerpointer/abslt.jp/public_html/wp-content/plugins/rich-table-of-content/functions.php:490 Stack trace: #0 /home/powerpointer/abslt.jp/public_html/wp-includes/class-wp-hook.php(324): rtoc_switch_mokuji('\n<p>WordPress \xE3...') #1 /home/powerpointer/abslt.jp/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters('\n<p>WordPress \xE3...', Array) #2 /home/powerpointer/abslt.jp/public_html/wp-includes/post-template.php(256): apply_filters('the_content', '<!-- wp:paragra...') #3 /home/powerpointer/abslt.jp/public_html/wp-content/themes/jin/single.php(117): the_content() #4 /home/powerpointer/abslt.jp/public_html/wp-includes/template-loader.php(106): include('/home/powerpoin...') #5 /home/powerpointer/abslt.jp/public_html/wp-blog-header.php(19): require_once('/home/powerpoin...') #6 /home/powerpointer/abslt.jp/public_html/index.php(17): require('/home/powerpoin...') #7 {main} thrown in /home/powerpointer/abslt.jp/public_html/wp-content/plugins/rich-table-of-content/functions.php on line 490