Issue with database table

Hello,
I have issue with database. I have done my site on localhost and I wanted to import database to new location. But when I try to export database from localhost there is an error appear:
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B??d

Zapytanie SQL:

CREATE TABLE IF NOT EXISTS wp_responsive_menu (
name varchar( 50 ) COLLATE utf8mb4_unicode_520_ci NOT NULL ,
value varchar( 5000 ) COLLATE utf8mb4_unicode_520_ci DEFAULT NULL ,
created_at datetime NOT NULL ,
updated_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP ,
PRIMARY KEY ( name )
) ENGINE = MYISAM DEFAULT CHARSET = utf8mb4 COLLATE = utf8mb4_unicode_520_ci;

MySQL zwróci? komunikat: Dokumentacja
#1273 – Unknown collation: ‘utf8mb4_unicode_520_ci’
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I have exported database without wp_responsive_menu table. Then I have imported database to new location, installed WP and added plugin “responsive menu” as new but after this I appeared this error:
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Catchable fatal error: Argument 1 passed to ResponsiveMenu\Form\Text::render() must be an instance of ResponsiveMenu\Models\Option, null given, called in /xxx/wp-content/plugins/responsive-menu/src/app/ViewModels/Components/Admin/Boxes.php on line 99 and defined in /xxx/wp-content/plugins/responsive-menu/src/app/Form/Text.php on line 9
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Appreciate any help

Thank you