I have Odoo 15 enterprise with Sign module and can upload pdf documents via email, so a person get the link and fill the data and sign that.

When the person click on button to validate and send document signed, it takes time, around 3 minutes to get the confirmation.

Also, when the person tries to generate the certificate it takes times too, to generate and download.

All i see in log file is: 

WARNING odoDatabase odoo.addons.base.models.ir_actions_report: wkhtmltopdf: b'Exit with code 1 due to network error: TimeoutError\n'

2022-04-01 00:48:56,675 65828 INFO odooDatabase odoo.addons.base.models.ir_actions_report: The PDF report has been generated for model: sign.request, records [27].

What can i validate to get better response time in that actions?

Thanks.