Fatal error: Uncaught UnexpectedValueException: Invalid response received from Authorization Server. Expected JSON. in /home/server225559/ftp/www/fanspot/wp-content/plugins/woocommerce-wave-connector/vendor/OAuth2_client/league/oauth2-client/src/Provider/AbstractProvider.php:539 Stack trace: #0 /home/server225559/ftp/www/fanspot/wp-content/plugins/woocommerce-wave-connector/includes/class-venus-wc-wave-api.php(247): League\OAuth2\Client\Provider\AbstractProvider->getAccessToken(Object(League\OAuth2\Client\Grant\RefreshToken), Array) #1 /home/server225559/ftp/www/fanspot/wp-content/plugins/woocommerce-wave-connector/includes/class-venus-wc-wave-api.php(287): Venus_Wc_Wave_API->wave_oauth_refresh() #2 /home/server225559/ftp/www/fanspot/wp-includes/class-wp-hook.php(303): Venus_Wc_Wave_API->wave_oauth('') #3 /home/server225559/ftp/www/fanspot/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #4 /home/server225559/ftp/www/fanspot/wp-includes/plugin.php(470): WP_Hook->do_action(Array) #5 /home/server22555 in /home/server225559/ftp/www/fanspot/wp-content/plugins/woocommerce-wave-connector/vendor/OAuth2_client/league/oauth2-client/src/Provider/AbstractProvider.php on line 539