Fatal Error on settings page

Hi there,

Thanks for making this plugin available.

I installed this specifically to test the trunk version of plugins in hopes it would be a quick and easy way to switch between versions of any plugin including trunk.

But as soon as I try to access the settings page, I get a fatal error.

Fatal error: Uncaught Error: Call to undefined function mb_convert_encoding()
in /home/account/domain/wp-content/plugins/vk-plugin-beta-tester/inc/vk-admin/package/class-vk-admin.php on line 99

Call stack:

Vk_Admin::get_admin_banner()
wp-content/plugins/vk-plugin-beta-tester/inc/vk-admin/package/class-vk-admin.php:396

Vk_Admin::admin_sub()
wp-content/plugins/vk-plugin-beta-tester/inc/vk-admin/package/class-vk-admin.php:438

Vk_Admin::admin_page_frame()
wp-content/plugins/vk-plugin-beta-tester/vk-plugin-beta-tester.php:324

VK_Plugin_Beta_Tester::vkpbt_add_customSettingPage()
wp-includes/class-wp-hook.php:307

WP_Hook::apply_filters()
wp-includes/class-wp-hook.php:331

WP_Hook::do_action()
wp-includes/plugin.php:474

do_action()
wp-admin/admin.php:259

require_once()
wp-admin/options-general.php:10

Additionally, the link to settings from the plugins page (plugin action links) is missing the “s” on the end, it should read “Settings” rather than “Setting”.

Thanks in advance!