Traceback errors

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just testing dirsearch on hackthissite, gives me the following errors:

sudo python3 dirsearch.py -e php -u https://www.hackthissite.org/mission/basic/11/ [sudo] password for user: Traceback (most recent call last): File "/home/user/stuff/dirsearch/dirsearch.py", line 73, in main() File "/home/user/stuff/dirsearch/dirsearch.py", line 42, in main check_dependencies() File "/home/user/stuff/dirsearch/lib/core/installation.py", line 41, in check_dependencies pkg_resources.require(get_dependencies()) File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 956, in require needed = self.resolve(parse_requirements(requirements)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 815, in resolve dist = self._resolve_dist( ^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 844, in _resolve_dist env = Environment(self.entries) ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 1044, in init self.scan(search_path) File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 1077, in scan self.add(dist) File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 1096, in add dists.sort(key=operator.attrgetter('hashcmp'), reverse=True) File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 2631, in hashcmp self.parsed_version, ^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 2679, in parsed_version self._parsed_version = parse_version(self.version) ^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/pkg_resources/_vendor/packaging/version.py", line 266, in init raise InvalidVersion(f"Invalid version: '{version}'") pkg_resources.extern.packaging.version.InvalidVersion: Invalid version: '1.4-py1' (package: adns)

Apologies if this is my mistake in install or something (used git clone method).