Help with running server with src in 1.2

I'm getting this error when running pmmp from source (SRC).

Code:

[CRITICAL] Composer autoloader not found
[CRITICAL] Please initialize composer dependencies before running.
bin\php\php.exe: Exit 1

I'm using Windows, Windows command line, PHP 7.2 Build from App Veyor.

Please tell me what I have to do to get it running from SRC in Windows. Running pre-built phars works but I need source

 

You have to use PocketMine's PHP build from https://jenkins.pmmp.io/job/PHP-7.2-Linux-x86_64/

 

I use Windows not Linux. Unless that will work too?

 

You need to "initialize the autoloader" and as far as I know, you can do that via this command:

Code:

bin\php\php.exe bin\composer install

I'm not sure though. Haven't ever ran pmmp on Windows.

See this if this doesn't work: https://forums.pmmp.io/threads/pocketmine-mp-is-now-using-composer.3755/