Parameter 1 to wpcf7_tg_pane_checkmail() expected to be a reference, value given in

Hi have WP plugin called check email validation.

This plugin add a new field in Contact Form 7 called "Checkmail" that allow to do a double email check when submitting the form. The new field will ask to users to confirm their email by typing it into a second field.

But the plugin support is not available and its not working with latest contact form 7.

While when i try to add the checkmail field in contact from backend it give me the error

Warning: Parameter 1 to wpcf7_tg_pane_checkmail() expected to be a reference, value given in /home/autowash/public_html/wp-content/plugins/contact-form-7/admin/includes/tag-generator.php on line 68

anyone here can help me in this issue.

via Chebli Mohamed