Running the command pitivi results to the following output:

** (gst-plugin-scanner:21018): CRITICAL **: 19:44:14.963: pygobject initialization failedTraceback (most recent call last):
File "/gnu/store/qzlwacdsvswq2ahayd3p6iail5n3rpwk-pitivi-0.999.0-2021.05.0/bin/.pitivi-real", line 172, in <module>

_run_pitivi()
File "/gnu/store/qzlwacdsvswq2ahayd3p6iail5n3rpwk-pitivi-0.999.0-2021.05.0/bin/.pitivi-real", line 143, in _run_pitivi
from pitivi import application
File "/gnu/store/qzlwacdsvswq2ahayd3p6iail5n3rpwk-pitivi-0.999.0-2021.05.0/lib/pitivi/python/pitivi/application.py", line 32, in <module>

from pitivi.mainwindow import MainWindow
File "/gnu/store/qzlwacdsvswq2ahayd3p6iail5n3rpwk-pitivi-0.999.0-2021.05.0/lib/pitivi/python/pitivi/mainwindow.py", line 29, in <module>

from pitivi.editorperspective import EditorPerspective
File "/gnu/store/qzlwacdsvswq2ahayd3p6iail5n3rpwk-pitivi-0.999.0-2021.05.0/lib/pitivi/python/pitivi/editorperspective.py", line 30, in <module>

from pitivi.dialogs.missingasset import MissingAssetDialog
File "/gnu/store/qzlwacdsvswq2ahayd3p6iail5n3rpwk-pitivi-0.999.0-2021.05.0/lib/pitivi/python/pitivi/dialogs/missingasset.py", line 24, in <module>

from pitivi.medialibrary import AssetThumbnail
File "/gnu/store/qzlwacdsvswq2ahayd3p6iail5n3rpwk-pitivi-0.999.0-2021.05.0/lib/pitivi/python/pitivi/medialibrary.py", line 255, in <module>

class AssetThumbnail(GObject.Object, Loggable):
File "/gnu/store/qzlwacdsvswq2ahayd3p6iail5n3rpwk-pitivi-0.999.0-2021.05.0/lib/pitivi/python/pitivi/medialibrary.py", line 280, in AssetThumbnail
EMBLEMS[status] = GdkPixbuf.Pixbuf.new_from_file_at_size(
gi.repository.GLib.GError: gdk-pixbuf-error-quark: Couldn’t recognize the image file format for file “/gnu/store/qzlwacdsvswq2ahayd3p6iail5n3rpwk-pitivi-0.999.0-2021.05.0/share/pitivi/pixmaps/asset-proxied.svg” (3)

Package information:

pitivi 0.999.0-2021.05.0 out /gnu/store/qzlwacdsvswq2ahayd3p6iail5n3rpwk-pitivi-0.999.0-2021.05.0