Não consigo ativar o modulo

Descrição curta do erro:
Não consigo ativar o modulo
Descrição detalhada do erro:
Ao tentar ativar o modulo, vejo o erro:

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TypeError: key(): Argument #1 ($array) must be of type array, string given in /var/www/vhosts/hosterx.com.br/httpdocs/modules/addons/gofascontaazul/config.php:139
Stack trace:
#0 /var/www/vhosts/hosterx.com.br/httpdocs/modules/addons/gofascontaazul/config.php(139): key()
#1 [internal function]: gofascontaazul_config()
#2 /var/www/vhosts/hosterx.com.br/httpdocs/vendor/whmcs/whmcs-foundation/lib/Module/Addon.php(0): call_user_func()
#3 /var/www/vhosts/hosterx.com.br/httpdocs/vendor/whmcs/whmcs-foundation/lib/Module/Addon.php(0): WHMCSModuleAddon->getConfiguration()
#4 /var/www/vhosts/hosterx.com.br/httpdocs/admin/configaddonmods.php(0): WHMCSModuleAddon::getConfigurableModules()
#5 {main}

Informações do sistema:
Módulo Conta Azul para WHMCS 2.1.0 | WHMCS 8.13.2 | PHP 8.1