Problems with external CSS

[alexandroldl]

When inserting the CSS Bootstrap file into the Layout file with the statement <?= $ This->Html->css ('/ vendor/bootstrap/css/bootstrap.min.css', [' fullBase '=> true])?> I have returned the error" WKHTMLTOPDF did not return any data ".

How could you solve this problem?

wkhtmltopdf 0.12.5 (with patched qt)
CakePHP 3.5.0
CakePdf 3.5.1

Thanks guys.

[sdevore]

I don't think the vendor directory is viewable from the install of cake and so a full path doesn't find it. I usually have to copy those files to be inside the webroot directory or build them with sass to the webfoot/css directory.