Error: Command

[Username13113]

Theres an error on requirements.txt some requirements get downloaded but there one error : ERROR: Command errored out with exit status 1:
command: /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/t5/b6d_h9bj10vgrc1943pn6lh00000gn/T/pip-req-build-v1dqtw/setup.py'"'"'; file='"'"'/private/var/folders/t5/b6d_h9bj10vgrc1943pn6lh00000gn/T/pip-req-build-v1dqtw/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' egg_info --egg-base /private/var/folders/t5/b6d_h9bj10vgrc1943pn6lh00000gn/T/pip-pip-egg-info-Pbun1F
cwd: /private/var/folders/t5/b6d_h9bj10vgrc1943pn6lh00000gn/T/pip-req-build-v1dqtw/
Complete output (9 lines):
Traceback (most recent call last):
File "", line 1, in
File "/private/var/folders/t5/b6d_h9bj10vgrc1943pn6lh00000gn/T/pip-req-build-v1dqtw/setup.py", line 2, in
from minecraft import version
File "minecraft/init.py", line 548, in
initglobals(use_known_records=True)
File "minecraft/init.py", line 523, in initglobals
KNOWN_PROTOCOL_VERSIONS.clear()
AttributeError: 'list' object has no attribute 'clear'
----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.