The official PayPal module is now returning code 503 when going from cart to checkout. It has been working fine for years.
https://addons.prestashop.com/en/payment-card-wallet/1748-paypal-official.html
I don't know what changed so I'm trying to troubleshoot. Where do I find logs for something like error code 503? The PrestaShop backoffice log doesn't have anything useful in it.
The 503 is skinned in PrestaShop theme, the exact message:
Quote503
Service Unavailable
The server is temporarily busy, try again later!
I would appreciate information on where to begin looking. I have cleared and disabled cache.