Tcpdf.php file missing

FAQ & Troubleshooting · 2 min read · Updated May 21, 2026

A troubleshooting fix for the “Tcpdf.php file missing” error during ticket PDF generation — typically when a security/file-clean plugin has stripped out files from Tickera, or when an incomplete plugin update has left the Tcpdf library in a broken state. The fix is usually to reinstall Tickera (which restores the bundled Tcpdf library) or to disable the offending security plugin.

If tcpdf.php file is missing, you will see an error like this when generating or downloading tickets:

Warning: require_once(wp-content/plugins/tickera/includes/tcpdf/tcpdf.php): failed to open stream: No such file or directory in /wp-content/plugins/tickera/includes/tcpdf/examples/tcpdf_include.php on line 

Fatal error: require_once(): Failed opening required ‘/wp-content/plugins/tickera/includes/tcpdf/tcpdf.php’ (include_path=’.:/usr/local/php56/pear’) in /wp-content/plugins/tickera/includes/tcpdf/examples/tcpdf_include.php on line 

The most likely reason behind this is that your antivirus software almost certainly flagged one of Tickera’s PDF-generation files as a false positive and renamed it which is why tcpdf.php file is missing

Tickera uses the TCPDF library to generate PDFs on your server (for example, when customers download their tickets). Some antivirus tools don’t like PHP files that work with PDFs and mark them as suspicious even though they are perfectly safe.

Here’s how to fix the issue:

First, open the settings of your antivirus plugin or server-side scanner and add the file tcpdf_include.php to its ignore/whitelist list. The exact steps depend on the antivirus tool you’re using.

Next, connect to your server via FTP and go to /wp-content/plugins/tickera/includes/tcpdf/examples/

You will most likely find that the tcpdf.php file is missing but there is a file named tcpdf_include.php.suspected. Rename it back to tcpdf_include.php

 

Once the file is whitelisted and properly renamed, Tickera will be able to load it again and ticket PDF generation will work normally.

 

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