Webhook Dispatcher error: Header validation failed: Shop-Id can't be empty

[musicmaster]

I have started to study the ps_checkout log files under the /var/logs directory. I see lots of entries like 

[2025-10-29 19:21:04] ps_checkout.ERROR: Webhook Dispatcher error: Header validation failed: Shop-Id can't be empty [] {"process_id":3177005}

These errors mostly (not always) happen in the minutes after some Paypal error. Different types of Paypal errors can be the initiator.

Sometimes there is a follow up error:

ps_checkout.ERROR: ADD API call failed for order 1234: Unprocessable Entity [] {"process_id":2690942}

Does anyone know what this is about?

[Prestashop Addict]

ps_checkout is not part of the open source project. Ask Prestashop directly for support on this module.