Additionally, before debugging a SWF file, you will need to download a special version of the Adobe Flash Player that supports debugging. Use the following URLs to download the Flash Player projector content debugger for your operating system.
Archived Files of Adobe Flash Player 32 (Win, Mac & Linux) standalone (aka projectors) players for Flex and Flash developers. - Grubsic/Adobe-Flash-Player-Debug-Downloads-Archive
However, you will need the standalone version of Adobe Flash Player (the plugin for web browsers is no longer available). You should download a “Content Debugger” version of the standalone Flash Player on your system, configured as your operat
To debug .swf files in Adobe Flash Player, download the Flash Player projector content debugger for Windows, macOS, or Linux, which may still be available from Adobe's website at the following locations.