comment_form_field_comment, array( $this, comment_form_field_comment

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Warning: Attempt to read property "name" on null in /home/c6974294/public_html/wp-plugin-api.com/wp-content/themes/wordpress-hooks/functions.php on line 33
See hook in action

See this hook used in plugins:

Select Pluginadvanced-custom-fields.6.8.6