Hello everyone, 

I've a hosted odoo 11 database on google cloud by bitnami, 

Wkhtmltopdf worked well in my odoo 11, but after enabling https to my database, the pdf report became improper, my company logo was disappear and the writing lines  became superposed,

I used bitnami support to enable https: Auto-Configure A Let's Encrypt Certificate:

sudo /opt/bitnami/bncert-tool

Could someone tell me how to fix it?

Thank you in advance