Can't install webkit2gtk on Slackware 15.0

Hi,I trying to install Lutris on Slackware but I got some errors

When I type Lutris in terminal:

2023-06-24 13:44:16,651: lspci is not available. List of graphics cards not available
MESA-INTEL: warning: Performance support disabled, consider sysctl dev.i915.perf_stream_paranoid=0

Traceback (most recent call last):
File "/usr/lib64/python3.9/site-packages/lutris/gui/dialogs/webconnect_dialog.py", line 7, in <module>
gi.require_version("WebKit2", "4.1")
File "/usr/lib64/python3.9/site-packages/gi/__init__.py", line 126, in require_version
raise ValueError('Namespace %s not available' % namespace)
ValueError: Namespace WebKit2 not available

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/bin/lutris", line 52, in <module>
from lutris.gui.application import Application # pylint: disable=no-name-in-module
File "/usr/lib64/python3.9/site-packages/lutris/gui/application.py", line 44, in <module>
from lutris.gui.installerwindow import InstallerWindow, InstallationKind
File "/usr/lib64/python3.9/site-packages/lutris/gui/installerwindow.py", line 19, in <module>
from lutris.installer import InstallationKind, get_installers, interpreter
File "/usr/lib64/python3.9/site-packages/lutris/installer/interpreter.py", line 14, in <module>
from lutris.installer.installer import LutrisInstaller
File "/usr/lib64/python3.9/site-packages/lutris/installer/installer.py", line 14, in <module>
from lutris.services import SERVICES
File "/usr/lib64/python3.9/site-packages/lutris/services/__init__.py", line 5, in <module>
from lutris.services.amazon import AmazonService
File "/usr/lib64/python3.9/site-packages/lutris/services/amazon.py", line 19, in <module>
from lutris.services.base import OnlineService
File "/usr/lib64/python3.9/site-packages/lutris/services/base.py", line 16, in <module>
from lutris.gui.dialogs.webconnect_dialog import DEFAULT_USER_AGENT, WebConnectDialog
File "/usr/lib64/python3.9/site-packages/lutris/gui/dialogs/webconnect_dialog.py", line 9, in <module>
gi.require_version("WebKit2", "4.0")
File "/usr/lib64/python3.9/site-packages/gi/__init__.py", line 126, in require_version
raise ValueError('Namespace %s not available' % namespace)
ValueError: Namespace WebKit2 not available

Later,I searched webkit on sbopkg and i found webkit2gtk and I tried to install and i got an error log.
It's a bit long, so I uploaded this to a file sharing site.

It includes CMakeError.log and CMakeOutput.log
https://file.io/GzoMTB9vUHYx

Thanks for your help.