Startup Error - We are offline

Hi,
I'm new to OctoPrint. I just followed the steps mentioned in the forum to install octoprint on my windows 10 PC. Everything went fine but when I finally run the 'octoprint serve' command It shows an error. It shows the following error.

(venv) D:\Program Files\OctoPrint>octoprint serve
2018-10-16 22:26:24,430 - octoprint.startup - INFO - ******************************************************************************
2018-10-16 22:26:24,430 - octoprint.startup - INFO - Starting OctoPrint 1.3.9
2018-10-16 22:26:24,430 - octoprint.startup - INFO - ******************************************************************************
2018-10-16 22:26:27,621 - octoprint.startup - INFO - We don't appear to be online, not fetching plugin blacklist
2018-10-16 22:26:27,642 - octoprint.plugin.core - INFO - Loading plugins from d:\program files\octoprint\venv\lib\site-packages\octoprint\plugins, C:\Users\abina\AppData\Roaming\OctoPrint\plugins and installed plugin packages...
2018-10-16 22:26:28,325 - octoprint.plugin.core - WARNING - Plugin "OctoPi Support Plugin" did not pass check
2018-10-16 22:26:28,387 - octoprint.plugins.discovery - INFO - pybonjour is not installed, Zeroconf Discovery won't be available
2018-10-16 22:26:28,394 - octoprint.plugin.core - INFO - Found 10 plugin(s) providing 10 mixin implementations, 8 hook handlers
2018-10-16 22:26:28,420 - octoprint.server.heartbeat - INFO - Starting server heartbeat, 900.0s interval
2018-10-16 22:26:28,667 - octoprint.server - INFO - Intermediary server started
2018-10-16 22:26:28,667 - octoprint.plugin.core - INFO - Loading plugins from d:\program files\octoprint\venv\lib\site-packages\octoprint\plugins, C:\Users\abina\AppData\Roaming\OctoPrint\plugins and installed plugin packages...
2018-10-16 22:26:28,667 - octoprint.plugin.core - WARNING - Plugin "OctoPi Support Plugin" did not pass check
2018-10-16 22:26:28,698 - octoprint.plugin.core - INFO - Found 10 plugin(s) providing 10 mixin implementations, 8 hook handlers
2018-10-16 22:26:28,706 - octoprint.filemanager.storage - INFO - Initializing the file metadata for C:\Users\abina\AppData\Roaming\OctoPrint\uploads...
2018-10-16 22:26:28,706 - octoprint.filemanager.storage - INFO - ... file metadata for C:\Users\abina\AppData\Roaming\OctoPrint\uploads initialized successfully.
2018-10-16 22:26:28,706 - octoprint.plugins.softwareupdate - INFO - Loaded version cache from disk
2018-10-16 22:26:29,272 - octoprint.util.pip - INFO - Using "d:\program files\octoprint\venv\scripts\python.exe -m pip" as command to invoke pip
2018-10-16 22:26:29,813 - octoprint.util.pip - INFO - Version of pip is 18.1
2018-10-16 22:26:29,813 - octoprint.util.pip - INFO - pip installs to d:\program files\octoprint\venv\Lib\site-packages (writable -> yes), --user flag needed -> no, virtual env -> yes
2018-10-16 22:26:29,813 - octoprint.util.pip - INFO - ==> pip ok -> yes
2018-10-16 22:26:29,813 - octoprint.plugin.core - INFO - Initialized 10 plugin implementation(s)
2018-10-16 22:26:29,813 - octoprint.plugin.core - INFO - 10 plugin(s) registered with the system:

Some more lines of error and the final lines are

2018-10-16 22:26:30,240 - octoprint.plugins.cura - INFO - Path to CuraEngine has not been configured or does not exist (currently set to None), Cura will not be selectable for slicing
2018-10-16 22:26:30,240 - octoprint.plugins.discovery - INFO - Registered OctoPrint instance on Abinav-Notebook for SSDP
2018-10-16 22:26:30,272 - octoprint.server - INFO - Listening on http://[::]:5000
2018-10-16 22:26:30,288 - octoprint.plugins.pluginmanager - INFO - Looks like we are offline, can't fetch repository from network
2018-10-16 22:26:30,288 - octoprint.plugins.pluginmanager - INFO - Looks like we are offline, can't fetch notices from network
2018-10-16 22:26:30,303 - octoprint.plugins.announcements - INFO - Looks like we are offline, can't fetch announcements for channel _important from network
2018-10-16 22:26:30,303 - octoprint.plugins.announcements - INFO - Looks like we are offline, can't fetch announcements for channel _releases from network
2018-10-16 22:26:30,303 - octoprint.plugins.announcements - INFO - Looks like we are offline, can't fetch announcements for channel _blog from network
2018-10-16 22:26:32,970 - octoprint.plugins.announcements - INFO - Looks like we are offline, can't fetch announcements for channel _plugins from network
2018-10-16 22:26:32,984 - octoprint.plugins.announcements - INFO - Looks like we are offline, can't fetch announcements for channel _octopi from network

I don't know what's wrong, my system is online and I just did all the installing and upgrading stuff but still octoprint shows 'we are offline'