Just did an upgrade on our test server from Jira 4.1.2 to 4.4 (on route to 5.2) and it seems to have gone OK so far except for a couple of little things like this.
As you can see, every tab in plugins shows that error at the top (not immediately, the tab loads for a couple of seconds then the error appears) and no plugins are being displayed from the Plugin Exchange wher ethey should be at the bottom there. I just see a loading spinner for a second then nothing.
Anybody have any ideas?
I am not sure if this is not being fixed yet.
"No route to host" can be caused by network issue. It could be also that, during the time, marketplace.atlassian.com is not accessible.
So, what you can do is:
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