https://code.paulk.fr/article12/connecting-a-ti-82-stats-and-a-computer-with-free-software en Free software, programming and stuff Thu, 01 Jan 1970 01:00:00 +0100 PluXml Paul Kocialkowski's coding blog - Connecting a TI-82 Stats and a computer, with free software - Comments Fatal error : type : 2 message : Trying to access array offset on value of type null file : /core/lib/class.plx.motor.php line : 746 See https://www.php.net/manual/en/errorfunc.constants.php about type of error ============================================================ Drop this plugin now for running PluXml and report to its author !!