How long have you waited to see if it would open?
That the warp is loading at all means its not some more fundamental issue, you are connecting to the world fine, but for whatever reason its taking a really long time to get the chunk data. My suspicion is that it is because your cache has data for the chunks trying to load, but that it is taking a really long time to purge all the chunk data in your cache from the now-expired exo-world, and your client is just sat waiting for the chunks to come out of the cache (queued behind the purge), which means if you sat there long enough it would eventually open up.
restarts wouldn’t help in this case as it has to purge that exo-world data one way or another…