PDF problem after using Let's Encrypt to setup HTTPS

ERPNext
7

Hi @mar and @federico_calvo,

have you checked if the ssl-module required for https-connections of wkhtmltopdf is available? There is an easy test for this: create a simple html file, which includes an image from an https source, e.g. something like

<html>
  <head>
    <title>Test</title>
  </head>
  <body>
    <h1>Hello World</h1>
    <img src="https://en.wikipedia.org/wiki/File:Erpnext_logo.svg" alt="Logo" />
  </body>
</html>

Save this as test.html on the server and then run

$ wkhtmltopdf test.html test.pdf

and observe the errors. If you find something like

QSslSocket: cannot call unresolved function SSLv23_client_method
QSslSocket: cannot call unresolved function SSL_library_init

install libssl1.0-dev:

$ sudo apt install libssl1.0-dev

Then, try again and see if is resolved…

Hope this helps.

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