Command errored out with exit status one

i am installing qark in my pc(Windows 7) for testing purpose i have installed python 3.7.2 and pip 19.2.3 for next step i have to install the requirement.txt file while installing an error occurred(Command errored out with exit status 1:) full error i will is give below.

i tried installing it again but error was same i don't know what should i do help me. thank you

    ERROR: Command errored out with exit status 1:
     command: 'c:\users\hp\appdata\local\programs\python\python37\python.exe' -c
 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\HP\\AppData\\L
ocal\\Temp\\pip-install-6tjj0pbq\\cffi\\setup.py'"'"'; __file__='"'"'C:\\Users\\
HP\\AppData\\Local\\Temp\\pip-install-6tjj0pbq\\cffi\\setup.py'"'"';f=getattr(to
kenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"
'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --
egg-base pip-egg-info
         cwd: C:\Users\HP\AppData\Local\Temp\pip-install-6tjj0pbq\cffi\
    Complete output (27 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\HP\AppData\Local\Temp\pip-install-6tjj0pbq\cffi\setup.py",
line 120, in <module>
        if sys.platform == 'win32' and uses_msvc():
      File "C:\Users\HP\AppData\Local\Temp\pip-install-6tjj0pbq\cffi\setup.py",
line 98, in uses_msvc
        return config.try_compile('#ifndef _MSC_VER\n#error "not MSVC"\n#endif')

      File "c:\users\hp\appdata\local\programs\python\python37\lib\distutils\com
mand\config.py", line 227, in try_compile
        self._compile(body, headers, include_dirs, lang)
      File "c:\users\hp\appdata\local\programs\python\python37\lib\distutils\com
mand\config.py", line 133, in _compile
        self.compiler.compile([src], include_dirs=include_dirs)
      File "c:\users\hp\appdata\local\programs\python\python37\lib\distutils\_ms
vccompiler.py", line 345, in compile
        self.initialize()
      File "c:\users\hp\appdata\local\programs\python\python37\lib\distutils\_ms
vccompiler.py", line 238, in initialize
        vc_env = _get_vc_env(plat_spec)
      File "c:\users\hp\appdata\local\programs\python\python37\lib\site-packages
\setuptools\msvc.py", line 185, in msvc14_get_vc_env
        return EnvironmentInfo(plat_spec, vc_min_ver=14.0).return_env()
      File "c:\users\hp\appdata\local\programs\python\python37\lib\site-packages
\setuptools\msvc.py", line 1228, in return_env
        self.OSIncludes,
      File "c:\users\hp\appdata\local\programs\python\python37\lib\site-packages
\setuptools\msvc.py", line 963, in OSIncludes
        sdkver = self._sdk_subdir
      File "c:\users\hp\appdata\local\programs\python\python37\lib\site-packages
\setuptools\msvc.py", line 1057, in _sdk_subdir
        ucrtver = self.si.WindowsSdkLastVersion
      File "c:\users\hp\appdata\local\programs\python\python37\lib\site-packages
\setuptools\msvc.py", line 604, in WindowsSdkLastVersion
        self.WindowsSdkDir, 'lib'))
      File "c:\users\hp\appdata\local\programs\python\python37\lib\site-packages
\setuptools\msvc.py", line 809, in _use_last_dir_name
        for dir_name in reversed(os.listdir(path))
    FileNotFoundError: [WinError 3] The system cannot find the path specified: '
C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\PlatformSDK\\lib'
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check th
e logs for full command output.