payment_mercado_pago API error: auto_return invalid. back_url.success must be defined

[zzz3f]

Odoo Version

• 16.0
• 17.0
• 18.0
• Other (specify)

Steps to Reproduce

Activate module payment_mercado_pago.
Enable activate mercado_pago as payment vendor adding access token from mercadopago, test or prod token.
Add a product to cart and proceed to payment
Choose to pay with mercadopago option
Proceed with payment

'auto_return invalid. back_url.success must be defined' (código invalid_auto_return)

Log Output

'auto_return invalid. back_url.success must be defined' (código invalid_auto_return)

Support Ticket

No response

[zzz3f]

Issue was web.base.url parameter not being retrieved properly, it was obtained as http instead of https.

[fabriciomesilva]

How did you change, here i change the web.base.url, but I the addon mercado pago doesn't change and send equal http instead of https.

[zzz3f]

In system parameters you can addd these:

web.base.url.freeze = true
web.base.url = https://yourdomain.com

Other alternative more invasive but that works is to modify payment_transaction.py

Line 61 as this is the actual lie causing the problem, that function returns http. Changing it to something like this will retrieve it from the parameters and allow flexibility if changes.

base_url = self.env['ir.config_parameter'].get_param('web.base.url')

This will ensure the value is retrieved from system parameters.

However, these are workarounds as the problem seems to be related to installation, I recently installed another instance using docker and there this parameter was setup properly from the beginning, then I did not need to do anything else.

Hope this helps.