"Bash: export:"path": not a valid identifier when starts git bash windows 7

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bash: export: `Files/Skype/Phone:/c/Program': not a valid identifier
bash: export: `Files/Microsoft': not a valid identifier
bash: export: `Server/100/Tools/Binn:/c/Program': not a valid identifier
bash: export: `Files/Microsoft': not a valid identifier
bash: export: `Server/100/DTS/Binn:/c/Program': not a valid identifier
bash: export: `Files/Microsoft': not a valid identifier
bash: export: `Server/100/Tools/Binn/VSShell/Common7/IDE:/c/Program': not a valid identifier
bash: export: `Files/Microsoft': not a valid identifier
bash: export: `9.0/Common7/IDE/PrivateAssemblies:%USERPROFILE%/.dnx/bin:/c/Program': not a valid identifier
bash: export: `Files/Microsoft': not a valid identifier
bash: export: `DNX/Dnvm:/c/Program': not a valid identifier
bash: export: `Files/nodejs:/c/Users/dell/AppData/Roaming/npm:/usr/bin/vendor_perl:/usr/bin/core_perl:/usr/bin': not a valid identifier

Getting this error when open git bash, in windows 7

After that when run any command like grunt or npm i got error

bash: npm: command not found

my export variables are as following

Quote:

dell@dell-PC MINGW32 /d/ProacDoc
$ export
declare -x !::
declare -x ACLOCAL_PATH="/mingw32/share/aclocal:/usr/share/aclocal"
declare -x ALLUSERSPROFILE="C:\\ProgramData"
declare -x APPDATA="C:\\Users\\dell\\AppData\\Roaming"
declare -x COMMONPROGRAMFILES="C:\\Program Files\\Common Files"
declare -x COMPUTERNAME="DELL-PC"
declare -x COMSPEC="C:\\Windows\\system32\\cmd.exe"
declare -x DISPLAY="needs-to-be-defined"
declare -x EXEPATH="C:\\Program Files\\Git"
declare -x FP_NO_HOST_CHECK="NO"
declare -x HOME="/c/Users/dell"
declare -x HOMEDRIVE="C:"
declare -x HOMEPATH="\\Users\\dell"
declare -x HOSTNAME="dell-PC"
declare -x INFOPATH="/usr/local/info:/usr/share/info:/usr/info:/share/info:"
declare -x LANG="en_US.UTF-8"
declare -x LOCALAPPDATA="C:\\Users\\dell\\AppData\\Local"
declare -x LOGONSERVER="\\\\DELL-PC"
declare -x MANPATH="/mingw32/share/man:/usr/local/man:/usr/share/man:/usr/man:/s hare/man:"
declare -x MSYSTEM="MINGW32"
declare -x NUMBER_OF_PROCESSORS="4"
declare -x OLDPWD
declare -x OS="Windows_NT"
declare -x PATH="/c/Users/dell/bin:/mingw32/bin:/usr/local/bin:/usr/bin:/bin:/mi ngw32/bin:/usr/bin:/c/Users/dell/bin:/c/Windows/system32:/c/Windows:/c/Windows/S ystem32/Wbem:/c/Windows/System32/WindowsPowerShell/v1.0:/c/Program"
declare -x PATHEXT=".COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC"
declare -x PKG_CONFIG_PATH="/mingw32/lib/pkgconfig:/mingw32/share/pkgconfig"
declare -x PLINK_PROTOCOL="ssh"
declare -x PRINTER="Send To OneNote 2007"
declare -x PROCESSOR_ARCHITECTURE="x86"
declare -x PROCESSOR_IDENTIFIER="x86 Family 6 Model 42 Stepping 7, GenuineIntel"
declare -x PROCESSOR_LEVEL="6"
declare -x PROCESSOR_REVISION="2a07"
declare -x PROGRAMFILES="C:\\Program Files"
declare -x PS1="\\[\\033]0;\$TITLEPREFIX:\${PWD//[^[:ascii:]]/?}\\007\\]\\n\\[\\ 033[32m\\]\\u@\\h \\[\\033[35m\\]\$MSYSTEM \\[\\033[33m\\]\\w\\[\\033[36m\\]\`__ git_ps1\`\\[\\033[0m\\]\\n\$ "
declare -x PSModulePath="C:\\Windows\\system32\\WindowsPowerShell\\v1.0\\Modules \\"
declare -x PUBLIC="C:\\Users\\Public"
declare -x PWD="/d/ProacDoc"
declare -x ProgramData="C:\\ProgramData"
declare -x SESSIONNAME="Console"
declare -x SHELL="/usr/bin/bash"
declare -x SHLVL="1"
declare -x SQL
declare -x SSH_ASKPASS="/mingw32/libexec/git-core/git-gui--askpass"
declare -x SYSTEMDRIVE="C:"
declare -x SYSTEMROOT="C:\\Windows"
declare -x Studio
declare -x TEMP="/tmp"
declare -x TERM="xterm"
declare -x TMP="/tmp"

What I have tried:

I have googled about it and tried by solutions like setting environment variables, export PATH and reinstall nodejs and gitbash some other