Hi, I get this error when trying to open the extension manager in 1.3

Gtk-Message: 15:50:55.633: Failed to load module "xapp-gtk3-module"
An error occured with the extensions manager!
Trying to self-update the package... Failed to update!

Please delete the package manually! (see location below)

Please report this error
------------------------

Report URL: https://gitlab.com/inkscape/extras/extension-manager/-/issues
Location: /tmp/.mount_InkscaCn6XfK/usr/share/inkscape/extensions/inkman/inkman/inkman
inkscape-extension-manager: 1.0

Not done
Traceback (most recent call last):
  File "manage_extensions.py", line 61, in recovery_run
    run(args)
  File "manage_extensions.py", line 47, in run
    version = options.for_version or get_inkscape_version()
  File "/tmp/.mount_InkscaCn6XfK/usr/share/inkscape/extensions/inkman/inkman/inkman/utils.py", line 95, in get_inkscape_version
    (major, minor) = line.strip().split(" ")[1].split(".")[:2]
ValueError: not enough values to unpack (expected 2, got 1)

I am also getting this issue. The full error:

<frozen importlib._bootstrap>:673: ImportWarning: DynamicImporter.exec_module() not found; falling back to load_module()
<frozen importlib._bootstrap>:673: ImportWarning: DynamicImporter.exec_module() not found; falling back to load_module()
Gtk-Message: 12:25:22.665: Failed to load module "appmenu-gtk-module"
An error occured with the extensions manager!
Trying to self-update the package... Failed to update!

Please delete the package manually! (see location below)

Please report this error
------------------------

Report URL: https://gitlab.com/inkscape/extras/extension-manager/-/issues
Location: /usr/share/inkscape/extensions/inkman/inkman/inkman
inkscape-extension-manager: 1.0

Not done
Traceback (most recent call last):
  File "/usr/share/inkscape/extensions/inkman/inkman/manage_extensions.py", line 61, in recovery_run
    run(args)
  File "/usr/share/inkscape/extensions/inkman/inkman/manage_extensions.py", line 36, in run
    from inkman.targets import TARGETS
  File "/usr/share/inkscape/extensions/inkman/inkman/inkman/targets.py", line 5, in <module>
    from .target import ExtensionsTarget, BasicTarget
  File "/usr/share/inkscape/extensions/inkman/inkman/inkman/target.py", line 32, in <module>
    from .remote import RemoteArchive, LocalFile
  File "/usr/share/inkscape/extensions/inkman/inkman/inkman/remote.py", line 26, in <module>
    import requests
ModuleNotFoundError: No module named 'requests'