Running “Tools/Scripts/build-webkit --wpe --makeargs=distcheck”:

[9/10] Checking release tarball: wpewebkit-2.36.0.tar
Traceback (most recent call last):
  File "/app/webkit/Tools/Scripts/make-dist", line 341, in <module>
    manifest = Manifest(arguments.manifest_filename, arguments.source_dir, arguments.build_dir, tarball_root)
  File "/app/webkit/Tools/Scripts/make-dist", line 150, in __init__
    self.process_line(line)
  File "/app/webkit/Tools/Scripts/make-dist", line 188, in process_line
    self.add_directory(Directory(*self.get_source_and_tarball_paths_from_parts(parts)))
  File "/app/webkit/Tools/Scripts/make-dist", line 98, in __init__
    self.files_in_version_control = self.list_files_in_version_control()
  File "/app/webkit/Tools/Scripts/make-dist", line 112, in list_files_in_version_control
    return out.rstrip('\n').split('\n')
TypeError: a bytes-like object is required, not 'str'