Error while running requirements.txt file

[rajeshwari-eng]

ERROR: Command errored out with exit status 1:
command: 'C:\Users\DELL\Anaconda3\envs\rasa\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\DELL\AppData\Local\Temp\pip-install-vkgxu0hi\cytoolz_31f081820b9a4d018f275677b0a363cd\setup.py'"'"'; file='"'"'C:\Users\DELL\AppData\Local\Temp\pip-install-vkgxu0hi\cytoolz_31f081820b9a4d018f275677b0a363cd\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(file) if os.path.exists(file) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\DELL\AppData\Local\Temp\pip-wheel-gh2tymds'
cwd: C:\Users\DELL\AppData\Local\Temp\pip-install-vkgxu0hi\cytoolz_31f081820b9a4d018f275677b0a363cd
Complete output (55 lines):
running bdist_wheel
running build
running build_py
creating build
creating build\lib.win-amd64-3.6
creating build\lib.win-amd64-3.6\cytoolz
copying cytoolz\compatibility.py -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\utils_test.py -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz_signatures.py -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz_version.py -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz_init_.py -> build\lib.win-amd64-3.6\cytoolz
creating build\lib.win-amd64-3.6\cytoolz\curried
copying cytoolz\curried\exceptions.py -> build\lib.win-amd64-3.6\cytoolz\curried
copying cytoolz\curried\operator.py -> build\lib.win-amd64-3.6\cytoolz\curried
copying cytoolz\curried_init_.py -> build\lib.win-amd64-3.6\cytoolz\curried
copying cytoolz\dicttoolz.pyx -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\functoolz.pyx -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\itertoolz.pyx -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\recipes.pyx -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\utils.pyx -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\cpython.pxd -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\dicttoolz.pxd -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\functoolz.pxd -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\itertoolz.pxd -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\recipes.pxd -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz\utils.pxd -> build\lib.win-amd64-3.6\cytoolz
copying cytoolz_init_.pxd -> build\lib.win-amd64-3.6\cytoolz
creating build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\dev_skip_test.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_compatibility.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_curried.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_curried_toolzlike.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_dev_skip_test.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_dicttoolz.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_docstrings.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_doctests.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_embedded_sigs.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_functoolz.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_inspect_args.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_itertoolz.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_none_safe.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_recipes.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_serialization.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_signatures.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_tlz.py -> build\lib.win-amd64-3.6\cytoolz\tests
copying cytoolz\tests\test_utils.py -> build\lib.win-amd64-3.6\cytoolz\tests
running build_ext
building 'cytoolz.dicttoolz' extension
creating build\temp.win-amd64-3.6
creating build\temp.win-amd64-3.6\Release
creating build\temp.win-amd64-3.6\Release\cytoolz
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.26.28801\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -IC:\Users\DELL\Anaconda3\envs\rasa\include -IC:\Users\DELL\Anaconda3\envs\rasa\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.26.28801\include" /Tccytoolz/dicttoolz.c /Fobuild\temp.win-amd64-3.6\Release\cytoolz/dicttoolz.obj
dicttoolz.c
C:\Users\DELL\Anaconda3\envs\rasa\include\pyconfig.h(59): fatal error C1083: Cannot open include file: 'io.h': No such file or directory
error: command 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.26.28801\bin\HostX86\x64\cl.exe' failed with exit status 2

ERROR: Failed building wheel for cytoolz