Command does not work

[nagi6]

Issue description

Command does not work.

Steps to reproduce the issue

server start

OS and versions

• Altay: 3.0.7+dev
• PHP: 7.2.0
• Server OS: windows10
• Game version: 1.5.0

Crashdump, backtrace, memory dumps, plugins list or other files

Fatal error: Uncaught Error: Access to undeclared static property: pocketmine\command\CommandReader::$stdin in C:\Users\nagizero0\Documents\PMMP\src\pocketmine\command\CommandReader.php:82
Stack trace:
#0 C:\Users\nagizero0\Documents\PMMP\src\pocketmine\command\CommandReader.php(174): pocketmine\command\CommandReader->initStdin()
#1 [internal function]: pocketmine\command\CommandReader->run()
#2 {main}
  thrown in C:\Users\nagizero0\Documents\PMMP\src\pocketmine\command\CommandReader.php on line 82

[Crypt97]

This is a very annoying mistake!

[Erkam246]

Update php