If i try to export the test environment DB and import the same on a website that has a test environment and a production environment, an internal server error will be displayed.

I tried importing with Bigdump, but I get the following error.

Error at the line 36:) ENGINE = MyISAM DEFAULT CHARSET = utf8mb4 COLLATE = utf8mb4_unicode_520_ci;
CREATE TABLE `wp_commentmeta` (
`meta_id` bigint (20) UNSIGNED NOT NULL,
`comment_id` bigint (20) UNSIGNED NOT NULL DEFAULT '0',
`meta_key` varchar (255) COLLATE utf8mb4_unicode_520_ci DEFAULT NULL,
`meta_value` longtext COLLATE utf8mb4_unicode_520_ci
) ENGINE = MyISAM DEFAULT CHARSET = utf8mb4 COLLATE = utf8mb4_unicode_520_ci
MySQL: Table 'wp_commentmeta' already exists

A similar error occurs when you back up.
So far, I was able to import with Bigdump without any problems, and I couldn't find a similar phenomenon even after examining the Internet.