getConfigWithoutCache() appears to be non-functional in some cases

[ihavenoface]

Not yet sure exactly what causes this but I'm getting this error:
main.ERROR: Notice: Trying to access array offset on value of type null in /var/www/html/vendor/btcpayserver/magento2-btcpay-module/Model/BTCPay/BTCPayService.php on line 601
when running a production store, and I need to manually return payment/btcpay/api_key and payment/btcpay/webhook_secret to unbreak.
That's after using bin/magento app:config:dump and then importing that on a production server.

[woutersamaey]

That's interesting.

To be honest, I've never used 'bin/magento app:config:dump' before