CF7DBPlugin

Hello

Some of our pages use contactform7 version 5.4.2 together with the “Email Before Download” version 6.6.

There, after sending the Form we get following error:

[Mon Aug 02 11:08:14.838915 2021] [php:error] [pid 56568] [client 192.168.255.57:48354] PHP Fatal error:  Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /var/www/wp-content/plugins/contact-form-7-to-database-extension/CF7DBPlugin.php:848
Stack trace:
#0 /var/www/wp-content/plugins/contact-form-7-to-database-extension/CF7DBPlugin.php(848): implode()
#1 /var/www/wp-content/plugins/contact-form-7-to-database-extension/CFDBIntegrationContactForm7.php(55): CF7DBPlugin->saveFormData()
#2 /var/www/wp-includes/class-wp-hook.php(305): CFDBIntegrationContactForm7->saveFormData()
#3 /var/www/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters()
#4 /var/www/wp-includes/plugin.php(518): WP_Hook->do_action()
#5 /var/www/wp-content/plugins/contact-form-7/includes/submission.php(458): do_action_ref_array()
#6 /var/www/wp-content/plugins/contact-form-7/includes/submission.php(81): WPCF7_Submission->before_send_mail()
#7 /var/www/wp-content/plugins/contact-form-7/includes/submission.php(25): WPCF7_Submission->proceed()
#8 /var/www/wp-content/plugins/contact-form-7/includes/contact-form.php(763): WPCF7_Submission::get_instance()
#9 /var/www/wp-content/plugins/contact-form-7/includes/rest-api.php(321): WPCF7_ContactForm->submit()
#10 /var/www/wp-includes/rest-api/class-wp-rest-server.php(1140): wpcf7_rest_create_feedback()
#11 /var/www/wp-includes/rest-api/class-wp-rest-server.php(987): WP_REST_Server->respond_to_request()
#12 /var/www/wp-includes/rest-api/class-wp-rest-server.php(414): WP_REST_Server->dispatch()
#13 /var/www/wp-includes/rest-api.php(370): WP_REST_Server->serve_request()
#14 /var/www/wp-includes/class-wp-hook.php(303): rest_api_loaded()
#15 /var/www/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters()
#16 /var/www/wp-includes/plugin.php(518): WP_Hook->do_action()
#17 /var/www/wp-includes/class-wp.php(388): do_action_ref_array()
#18 /var/www/wp-includes/class-wp.php(750): WP->parse_request()
#19 /var/www/wp-includes/functions.php(1291): WP->main()
#20 /var/www/wp-blog-header.php(16): wp()
#21 /var/www/index.php(17): require('...')
#22 {main}
  thrown in /var/www/wp-content/plugins/contact-form-7-to-database-extension/CF7DBPlugin.php on line 848, referer: https://www-clone.imtf.com/downloads/

Changing the

/var/www/wp-content/plugins/contact-form-7-to-database-extension/CF7DBPlugin.php

at line 848, to

/* $value = is_array($value) ? implode($value, ‘, ‘) : $value; */
$value = is_array($value) ? implode(‘, ‘, $value) : $value;

solves the problem.

Maybe you can change that in your next version ?

Thank you
Michael Faessler