Leo, would you pls post your export command code? Tks,

Pls use a button for export instead of an a tag:

    <button formaction="path/to/export.php">Download PDF</button> 

Your error seems to be that the path to export.php from the current page is not correct. If the file "export.php" is in the same directory as the report's view file pls try this:

    <button formaction="<?php echo dirname($_SERVER['PHP_SELF']); ?>/export.php">Download PDF</button>

Let us know how this works for you. Tks,

Pls check my previous answer. Next time pls post your source code in text using our editor's code buton and in one post only. Tks,