Hello @saksham,
The most important in your logs is this message:
window-server is waiting for Client window-fd to connect to Storage DemoAutochanger
This means that the Bacula File Daemon is trying to connect to the Storage Daemon but from some reason it can't.
I would propose to check if the Bacula Storage Daemon does not listen on localhost but it listens on all interfaces or on the interface with address available for the Bacula Windows client.
If the Bacula Storage Daemon listens on the localhost, then you need to remove from the Bacula Storage Daemon Storage resource settings this directive
SdAddress = 127.0.0.1
and after restart the Bacula Storage Daemon. It should start listening on all network interfaces.

Best regards,
Marcin Haba (gani)