What causes error "pending connexion failed"?

I’m having this exact problem with my little project game as well. I have Steam set up correctly in the DefaultEngine.ini, everything seems to be hooked up correctly (I’m doing all of this in the menus and putting the functionality in a game-instance, I’m calling it all correctly and everything is checking out that way) and it gets to where it says I’ve joined the server, and then bam puts me back in my main menu still technically connected to the other server, but I’ve set it up to catch any possible errors and it’s catching the “Pending Connection Failure” error even though everything seems to be set up correctly.

I’ve gone back and forth checking my engine.ini, checking my server hosting, finding, and joining functions and making sure they’re all doing what they’re supposed to (they are) and it seems that I keep getting this error even though I’m able to successfully broadcast and find servers.

If the original poster happened to find an answer, posting it here would be greatly appreciated, but if anyone else has an answer that would be greatly appreciated too.

I think it should also be noted that I have done this before on a separate project, and it had worked just fine no problem; however, between that project and this one, there’s really no differences in how I handled the functionality and UI. Everything is hooked up the same way (albeit a little more efficiently this time), and everything should be working, but just isn’t. Any kind of response would be greatly appreciated.