PsTools : msiexec using Psexec in remote computer

Invoking command : C:\Staging\PSTools\psexec.exe \\10.31.67.178 /ACCEPTEULA -u abc.com\administrator -p 123$ msiexec /qn /i "C:\Staging\123.msi" /lv "C:\Staging\installLog.txt"
Stdout: 
Stdout: PsExec v2.0 - Execute processes remotely
Stdout: Copyright (C) 2001-2013 Mark Russinovich
Stdout: Sysinternals - www.sysinternals.com
Stdout: 
Stdout: The filename, directory name, or volume label syntax is incorrect.
Stdout: Connecting to 10.31.67.178...
Stdout: 
Stdout: 
Stdout: Starting PSEXESVC service on 10.31.67.178...
Stdout: 
Stdout: 
Stdout: Connecting with PsExec service on 10.31.67.178...
Stdout: 
Stdout: 
Stdout: Starting msiexec /qn /i C:\Staging\123.msi /lv C:\Staging\installLog.txt on 10.31.67.178...
Stdout: 
Stdout: 
Stdout: 
Stdout: 
Stdout: 
Stdout: 
Stdout: PsExec could not start msiexec /qn /i C:\Staging\123.msi /lv C:\Staging\installLog.txt on 10.31.67.178: