Error upon activation, PDFs cannot be displayed, fix included

  • Resolved Anonymous User 7658014

    (@anonymized_7658014)


    8 years, 3 months ago

    Upon activation in WordPress 4.6 (local install, MAMP, PHP 7) I get this error message:

    The plugin generated 410 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.

    When I try to access a generated PDF, I get a notice about the use of an undefined constant DOMPDF_DEFAULT_PAPER_SIZE in wp-pdf-templates.php on line 350, followed by “headers already sent” warnings, and the PDF cannot be displayed.

    Temporarily changing that undefined constant to a valid value (“letter”) fixes the behavior for me. Edited line 350 to this:

    defined('DOMPDF_PAPER_SIZE') ? DOMPDF_PAPER_SIZE : 'letter',

    https://www.ads-software.com/plugins/wp-pdf-templates/

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