Why am I seeing 'Internal Server Error' when discovering Layer 2 map?

If you have installed OpManager in a Linux box running in console mode, you may encounter this issue.

The issue is because the 'X11 windows server' display variable might not be set to the correct value. In such case, the layer 2 map will be discovered internally, 

However OpManager will face problem in rendering it in the browser.

To resolve this, execute below command with super user privilege:

export DISPLAY=:0




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