C:\Users\SDE\python\pyinstaller\reader-master>pyinstaller cli.py --add-data reader\config.cfg:reader
usage: pyinstaller [-h] [-v] [-D] [-F] [--specpath DIR] [-n NAME] [--add-data <SRC;DEST or SRC:DEST>] [--add-binary <SRC;DEST or SRC:DEST>] [-p DIR] [--hidden-import MODULENAME] [--collect-submodules MODULENAME]
                   [--collect-data MODULENAME] [--collect-binaries MODULENAME] [--collect-all MODULENAME] [--copy-metadata PACKAGENAME] [--recursive-copy-metadata PACKAGENAME] [--additional-hooks-dir HOOKSPATH]
                   [--runtime-hook RUNTIME_HOOKS] [--exclude-module EXCLUDES] [--key KEY] [--splash IMAGE_FILE] [-d {all,imports,bootloader,noarchive}] [-s] [--noupx] [--upx-exclude FILE] [-c] [-w]
                   [-i <FILE.ico or FILE.exe,ID or FILE.icns or "NONE">] [--disable-windowed-traceback] [--version-file FILE] [-m <FILE or XML>] [-r RESOURCE] [--uac-admin] [--uac-uiaccess] [--win-private-assemblies]
                   [--win-no-prefer-redirects] [--osx-bundle-identifier BUNDLE_IDENTIFIER] [--target-architecture ARCH] [--codesign-identity IDENTITY] [--osx-entitlements-file FILENAME] [--runtime-tmpdir PATH]
                   [--bootloader-ignore-signals] [--distpath DIR] [--workpath WORKPATH] [-y] [--upx-dir UPX_DIR] [-a] [--clean] [--log-level LEVEL]
                   scriptname [scriptname ...]
pyinstaller: error: argument --add-data: invalid add_data_or_binary value: 'reader\\config.cfg:reader'