Created attachment 4361 [details]
It is giving log as Failed to connect to Mir: Failed to connect to server socket: No such file or directory Unable to init server: Could not connect: Connection refused

STEPS TO REPRODUCE: 1. clone poky2. cd poky3. source oe-init-build-env4. bitbake core-image-full-cmdline5. bitbake -u taskexp -g core-image-full-cmdline
NOTE: To execute the last command of this test, it's necessary that the machine is executing an X11 server, or if that's not the case (for example, if running the test on a headless server), it is required to enable ssh X11 forwarding on both, the server and the client, and have the X11 server running on the client.
The instructions to enable X11 forwarding vary between distributions. But for example, these are the steps to enable it between a server running openSUSE Leap 42.1 and a client with Fedora 24:A. On the server, make sure /home/<username>/.ssh/config contains the line:    ForwardX11 yesB. On the server, make sure xauth is installed by running:    which xauthC. On the client, connect to the server, enabling X11 forwarding, for example by using:    ssh -X user@server
NOTE 2: depexp was renamed to taskexp on 2.3 M4

EXPECTED OUTCOME: 4. Image should be successfully built5. Verify that a "dependency explorer" is opened and file    dependencies are listed  

After running 5th step it is giving log as follows:
bitbake -u taskexp -g core-image-full-cmdline

Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused
Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Unable to init server: Could not connect: Connection refused

"I have attached the screenshot"