[ERROR] Required keyword argument "input" not defined.

[fstream0000]

How to solve this? I am using ubuntu 16.04( Windows Subsystem for Linux).

fstream@fstream:~/audi/usbaudio$ meson x --buildtype release
The Meson build system
Version: 0.29.0
Source dir: /home/fstream/audi/usbaudio
Build dir: /home/fstream/audi/usbaudio/x
Build type: native build
Build machine cpu family: x86_64
Build machine cpu: x86_64
Project name: usbaudio
Native c compiler: cc (gcc 5.4.0-6ubuntu1)
Found pkg-config: /usr/bin/pkg-config (0.29.1)
Native dependency libpulse found: YES 8.0
Native dependency libusb-1.0 found: YES 1.0.20

Meson encountered an error in file meson.build, line 21, column 0:
Required keyword argument "input" not defined.

[rom1v]

Update your meson.

(pip3 install meson, or upgrade your Ubuntu, 16.04 is very old)