Erro Crítico ao testar conex?o

Boa tarde, pode me ajudar?

Acabei de instalar o plugin pra testar e quando clico em testar conex?o recebo mensagem de erro crítico no WordPress.

Como posso proceder para corrigir?

Detalhes do erro
================
Um erro do tipo E_ERROR foi causado na linha 274 do arquivo /home/628317.cloudwaysapps.com/nswrcyxgtn/public_html/wp-content/plugins/wc-banco-inter/index.php. Mensagem de erro: Uncaught Error: Cannot use object of type WP_Error as array in /home/628317.cloudwaysapps.com/nswrcyxgtn/public_html/wp-content/plugins/wc-banco-inter/index.php:274
Stack trace:
#0 /home/628317.cloudwaysapps.com/nswrcyxgtn/public_html/wp-content/plugins/wc-banco-inter/index.php(61): WC_Banco_Inter->banco_inter_test_api_billet()
#1 /home/628317.cloudwaysapps.com/nswrcyxgtn/public_html/wp-content/plugins/woocommerce/includes/class-wc-payment-gateways.php(97): WC_Banco_Inter->__construct()
#2 /home/628317.cloudwaysapps.com/nswrcyxgtn/public_html/wp-content/plugins/woocommerce/includes/class-wc-payment-gateways.php(70): WC_Payment_Gateways->init()
#3 /home/628317.cloudwaysapps.com/nswrcyxgtn/public_html/wp-content/plugins/woocommerce/includes/class-wc-payment-gateways.php(43): WC_Payment_Gateways->__construct()
#4 /home/628317.cloudwaysapps.com/nswrcyxgtn/public_html/wp-content/plugins/woocommerce/includes/class-woocommerce.php(883): WC_Payment_Gateways::instance()
#5 /home/628317.cloudwaysapps.com/nswrcyxgtn/pub