startx output

X.Org X Server 1.20.4
X Protocol Version 11, Revision 0
Build Operating System: Linux Arch Linux
Current Operating System: Linux lukas-pc 5.0.10-arch1-1-ARCH #1 SMP PREEMPT Sat Apr 27 20:06:45 UTC 2019 x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-linux root=/dev/mapper/store-root rw quiet loglevel=4 vga=current cryptdevice=/dev/nvme0n1:enc:header quiet loglevel=4 vga=current
Build Date: 27 February 2019  04:04:00PM

Current version of pixman: 0.38.4
	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Fri May  3 12:17:17 2019
(==) Using config directory: "/etc/X11/xorg.conf.d"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(II) modeset(G0): Initializing kms color map for depth 24, 8 bpc.
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Unsupported high keycode 372 for name <I372> ignored
>                   X11 cannot support keycodes above 255.
>                   This warning only shows for the first high keycode.
> Internal error:   Could not resolve keysym XF86MonBrightnessCycle
Errors from xkbcomp are not fatal to the X server
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Unsupported high keycode 372 for name <I372> ignored
>                   X11 cannot support keycodes above 255.
>                   This warning only shows for the first high keycode.
> Error:            Can't find file "layout" for symbols include
>                   Exiting
>                   Abandoning symbols file "default"
Errors from xkbcomp are not fatal to the X server
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Unsupported high keycode 372 for name <I372> ignored
>                   X11 cannot support keycodes above 255.
>                   This warning only shows for the first high keycode.
> Internal error:   Could not resolve keysym XF86MonBrightnessCycle
Errors from xkbcomp are not fatal to the X server
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Unsupported high keycode 372 for name <I372> ignored
>                   X11 cannot support keycodes above 255.
>                   This warning only shows for the first high keycode.
> Internal error:   Could not resolve keysym XF86MonBrightnessCycle
Errors from xkbcomp are not fatal to the X server
polybar|error: No monitors found
xinit: connection to X server lost

waiting for X server to shut down (II) Server terminated successfully (0). Closing log file.