A portal in Mission will not hack
The 6th portal of this mission is giving me a scanner communication error when I try to hack it. I've deployed resonators on it, recharged it and hacked nearby portals, but that particular portal won't let me hack. I even dropped some heat sinks on it just in case I'm getting the message because it's burnt out, but it didn't work. Plus re-started the App, which didn't help.
On a Samsung S8.
Then, just after I finished posting this it worked. Very strange, but there were some people at the portal cutting down a tree. Maybe there was some electrical interference from their machinery?