Error 404: The weave is unraveling...
You have stumbled on a place where the magic that binds the weave has been torn apart, and the portal in front of you is being sucked into the ensuing maelstrom!
Stay vigilant, brave Guardian. The weave must be restored, no matter the cost!
You stop to think for a bit in order to plan your next move.... but then you suddenly remembered about that thing that you really needed to do... yeah... you seem to remember that it was very important.. maybe you should do that first... and then you can restore the weave after...
Maybe you’ll find that thing behind one of these other portals?
Or maybe it was back where you came from?