Wepay fatal error

Hey guys, we getting this error with Wepay payment type: how we can fix it?

Wepay:
Fatal error: Uncaught exception ‘WePayPermissionException’ with message ‘invalid client_id or client_secret’ in /home/fili4360/public_html/wp-content/themes/funding_press/funding/lib/WePay/wepay.php:268 Stack trace: #0 /home/fili4360/public_html/wp-content/themes/funding_press/funding/lib/WePay/wepay.php(290): WePay::make_request(‘preapproval/cre…’, Array, Array) #1 /home/fili4360/public_html/wp-content/themes/funding_press/funding/funding.php(414): WePay->request(‘preapproval/cre…’, Array) #2 [internal function]: F_Controller->action_template_redirect(”) #3 /home/fili4360/public_html/wp-includes/plugin.php(505): call_user_func_array(Array, Array) #4 /home/fili4360/public_html/wp-includes/template-loader.php(12): do_action(‘template_redire…’) #5 /home/fili4360/public_html/wp-blog-header.php(16): require_once(‘/home/fili4360/…’) #6 /home/fili4360/public_html/index.php(17): require(‘/home/fili4360/…’) #7 {main} thrown in /home/fili4360/public_html/wp-content/themes/funding_press/funding/lib/WePay/wepay.php on line 268