error: command '/usr/bin/clang' failed with exit status 1

[ahbon123]

OS 10.15

$ pip3 install cchardet 

Python version

$ python 3.6

As I try to install cChardet, it generates the following error. Anyone could help? Thank you.

What is the problem?

    ERROR: Command errored out with exit status 1:
     command: /Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/_g/2rrxbrnj1xb_h5k70xgtdss00000gn/T/pip-install-3vloyusd/cchardet/setup.py'"'"'; __file__='"'"'/private/var/folders/_g/2rrxbrnj1xb_h5k70xgtdss00000gn/T/pip-install-3vloyusd/cchardet/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/_g/2rrxbrnj1xb_h5k70xgtdss00000gn/T/pip-record-pyoqp_k9/install-record.txt --single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.6/include/python3.6m/cchardet
         cwd: /private/var/folders/_g/2rrxbrnj1xb_h5k70xgtdss00000gn/T/pip-install-3vloyusd/cchardet/
    Complete output (23 lines):
    cythonize: ['src/cchardet/_cchardet.pyx']
    /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/Cython/Compiler/Main.py:369: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: /private/var/folders/_g/2rrxbrnj1xb_h5k70xgtdss00000gn/T/pip-install-3vloyusd/cchardet/src/cchardet/_cchardet.pyx
      tree = Parsing.p_module(s, pxd, full_module_name)
    running install
    running build
    running build_py
    creating build
    creating build/lib.macosx-10.6-intel-3.6
    creating build/lib.macosx-10.6-intel-3.6/cchardet
    copying src/cchardet/version.py -> build/lib.macosx-10.6-intel-3.6/cchardet
    copying src/cchardet/__init__.py -> build/lib.macosx-10.6-intel-3.6/cchardet
    running build_ext
    building 'cchardet._cchardet' extension
    creating build/temp.macosx-10.6-intel-3.6
    creating build/temp.macosx-10.6-intel-3.6/src
    creating build/temp.macosx-10.6-intel-3.6/src/cchardet
    creating build/temp.macosx-10.6-intel-3.6/src/ext
    creating build/temp.macosx-10.6-intel-3.6/src/ext/uchardet
    creating build/temp.macosx-10.6-intel-3.6/src/ext/uchardet/src
    creating build/temp.macosx-10.6-intel-3.6/src/ext/uchardet/src/LangModels
    /usr/bin/clang -fno-strict-aliasing -Wsign-compare -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch i386 -arch x86_64 -g -Isrc/ext/uchardet/src -I/Library/Frameworks/Python.framework/Versions/3.6/include/python3.6m -c src/cchardet/_cchardet.cpp -o build/temp.macosx-10.6-intel-3.6/src/cchardet/_cchardet.o
    xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
    error: command '/usr/bin/clang' failed with exit status 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/_g/2rrxbrnj1xb_h5k70xgtdss00000gn/T/pip-install-3vloyusd/cchardet/setup.py'"'"'; __file__='"'"'/private/var/folders/_g/2rrxbrnj1xb_h5k70xgtdss00000gn/T/pip-install-3vloyusd/cchardet/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/_g/2rrxbrnj1xb_h5k70xgtdss00000gn/T/pip-record-pyoqp_k9/install-record.txt --single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.6/include/python3.6m/cchardet Check the logs for full command output.

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