WKHTMLTOPDF Fails with error because of relative css path references #796

BookStack Version:

BookStack v0.20.3

PHP Version:

PHP Version 7.1.15

MySQL Version:

Server version: 5.7.21

OS Version:

Ubuntu 17.10.1 artful

Expected Behavior

PDF Export and download

Current Behavior

Export fails with error:
The exit status code '1' says something went wrong: stderr: "Loading pages (1/6) [> ] 0% [======> ] 10% [========================> ] 41% [============================> ] 48% [============================================================] 100% Counting pages (2/6) [============================================================] Object 1 of 1 Resolving links (4/6) [============================================================] Object 1 of 1 Loading headers and footers (5/6) Printing pages (6/6) [> ] Preparing [==============================> ] Page 1 of 2 [============================================================] Page 2 of 2 Done Exit with code 1 due to network error: ContentNotFoundError " stdout: "" command: /usr/bin/wkhtmltopdf --print-media-type '/tmp/knp_snappy5acf39fd814967.44112836.html' '/tmp/knp_snappy5acf39fd815d93.64777959.pdf'.

Steps to Reproduce

Use Callouts as the generated css references the callout icons with a relative path like "/icon/info-filled.svg?color=015380"

or for testing

• Generate a contained html file from the page at fault
• Store it in /tmp (where the knp snappy stores temp html and pdf)
• try to run wkhtmltopdf test.html test.php result will be something like this:

root@server1:/tmp# wkhtmltopdf teste.html teste.pdf Loading pages (1/6) Counting pages (2/6) Resolving links (4/6) Loading headers and footers (5/6) Printing pages (6/6) Done Exit with code 1 due to network error: ContentNotFoundError

After commenting out all the relative paths the result becomes:

root@server1:/tmp# wkhtmltopdf teste.html teste.pdf Loading pages (1/6) Counting pages (2/6) Resolving links (4/6) Loading headers and footers (5/6) Printing pages (6/6) Done

Steps to solve temporarily

Create a symlink in the root path of your server that points to /path-to-bookstack-instance/resources/assets/icons and name it "icon" *see image below