Unclear error message

[ellwoods]

I'm new to PHP so my apologies if I have misunderstood something along the way.

I have the extension setup and working, however sometimes I get the following error

C:\php\php-7.3.1-nts-Win32-VC15-x64\php.exe "C:\Users\me.vscode\extensions\kokororin.vscode-phpfmt-1.0.30\node_modules\phpfmt\fmt.phar" --psr2 --indent_with_space=4 C:\Users\meAppData\Local\Temp\temp-zsbvdfaro.php

I have no idea what this means, though I would guess it's connected to the tab vs spaces discussion. Perhaps more importantly I'm not at all clear from the error message how to resolve it or what I am expected to do.