call_user_func error.

Found the same error on ssh as well.

https://i.imgur.com/PkYDaPS.png



thrown in /var/www/html/wp-includes/rest-api/class-wp-rest-server.php on line 1487
Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, array must have exactly two members in /var/www/html/wp-includes/rest-api/class-wp-rest-server.php:1487
Stack trace:

0 /var/www/html/wp-includes/rest-api/class-wp-rest-server.php(1428): WP_REST_Server->get_data_for_route('/dokan/v2/produ…', Array, 'help')

1 /var/www/html/wp-includes/rest-api/class-wp-rest-server.php(1255): WP_REST_Server->get_data_for_routes(Array, 'help')

2 /var/www/html/wp-includes/rest-api/class-wp-rest-server.php(1171): WP_REST_Server->get_index(Object(WP_REST_Request))

3 /var/www/html/wp-includes/rest-api/class-wp-rest-server.php(1018): WP_REST_Server->respond_to_request(Object(WP_REST_Request), '/', Array, NULL)

4 /var/www/html/wp-content/plugins/woocommerce/includes/cli/class-wc-cli-runner.php(63): WP_REST_Server->dispatch(Object(WP_REST_Request))

5 phar:///usr/local/bin/wp/vendor/wp-cli/wp-cli/php/class-wp-cli.php(336): WC_CLI_Runner::after_wp_load()

6 phar:///usr/local/bin/wp/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(1362): WP_CLI::do_hook('after_wp_load')

7 phar:///usr/local/bin/wp/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(1254): WP_CLI\Runner->load_wordpress()

8 phar:///usr/local/bin/wp/vendor/wp-cli/wp-cli/php/WP_CLI/Bootstrap/LaunchRunner.php(28): WP_CLI\Runner->start()

9 phar:///usr/local/bin/wp/vendor/wp-cli/wp-cli/php/bootstrap.php(78): WP_CLI\Bootstrap\LaunchRunner->process(Object(WP_CLI\Bootstrap\BootstrapState))

10 phar:///usr/local/bin/wp/vendor/wp-cli/wp-cli/php/wp-cli.php(32): WP_CLI\bootstrap()

11 phar:///usr/local/bin/wp/php/boot-phar.php(11): include('phar:///usr/loc…')

We were using WP CLI to update plugins by bash, shell file.
It keeps showing errors from dokan.
If you fix the error, our shell script will be very quite. 🙂

Thank you!