Starting build of org.pitivi.Pitivi
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Building module gstreamer in /home/januz/code/pitivi/build/flatpak/.flatpak-builder/build/gstreamer-3
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Already on 'master'
The Meson build system
Version: 0.47.1
Source dir: /run/build/gstreamer
Build dir: /run/build/gstreamer/_flatpak_build
Build type: native build

meson.build:1:0: ERROR:  Meson version is 0.47.1 but project requires >= 0.48.

A full log can be found at /run/build/gstreamer/_flatpak_build/meson-logs/meson-log.txt
Error: module gstreamer: Child process exited with code 1
Traceback (most recent call last):
  File "/home/januz/code/pitivi/build/flatpak/pitivi-flatpak", line 775, in <module>
    app_flatpak.run()
  File "/home/januz/code/pitivi/build/flatpak/pitivi-flatpak", line 511, in run
    self.setup_sandbox()
  File "/home/januz/code/pitivi/build/flatpak/pitivi-flatpak", line 594, in setup_sandbox
    subprocess.check_call(builder_args, cwd=self.scriptdir)
  File "/usr/lib64/python3.7/subprocess.py", line 363, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['flatpak-builder', '--force-clean', '--ccache', '/home/januz/code/pitivi-prefix', '/home/januz/code/pitivi/build/flatpak/Pitivi.timeline_ui_01.json', '--build-only']' returned non-zero exit status 1.