Fatal error : Call to undefined method SwpmForm::select_locations()

Hello Team,

I am use your plugin and now I am not able to update member from edit page.

All functionality work as expected but when I try to update member information then I got a error.
URL seem like – site-url/admin.php?page=simple_wp_membership&member_action=edit&member_id=38

Here I added error message –

Fatal error: Uncaught Error: Call to undefined method SwpmForm::select_locations() in /public_html/wp-content/plugins/simple-membership/classes/class.swpm-form.php:17

I tried to find select_location() function in your plugin but not able to find this function so can you please add your input here ASAP.

Plugin name – Simple WordPress Membership
Version – 4.2.4