Problem with QWeb reports rendering to PDF, wkhtmltopdf version OK

Hi, guys

​ Odoo enterprise version 13 when the staging is created, the reports is Ok whit styles, after when I make push on the repository with any change, the staging is automatically rebuild and the reports are show without styles, I mean no image and styles are shown

I have checked for a wkhtmltopdf version and is Ok 0.12.5

I try setting system parameter 

Name: web.base.url.freeze

Value: True

and web.base.url parameter was setting too

but nothing is happening

does someone have any idea ?

Thanks