Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPLAY variable is set. Failed

ERROR: 
 <<<<
Checking swap space: must be greater than 150 MB.   Actual 33886 MB    Passed
Checking monitor: must be configured to display at least 256 colors
    >>> Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPLAY variable is set.    Failed <<<<

Some requirement checks failed. You must fulfill these requirements before

continuing with the installation,

SOLUTION: 

# Use -l to ignore those probleM.

Syntax: ssh -X ip -l user  

Example: 

ssh -X 119.126.17.18 -l oracle