Multiplayer after packaging project doesn't work!

[zzzlor]

"Cannot map local player to unique net ID"
I work with the big project. But when packing I had a lot of problems.
One of them - a multiplayer.
I created the new project to show a problem.
I created a simple multiplayer:

https://answers.unrealengine.com/sto...ts/79542-2.png

And it work:


But after packaging project - the multiplayer doesn't work:

https://answers.unrealengine.com/sto...ts/79543-6.png

I add :
[OnlineSubsystem]
DefaultPlatformService=Null
in DefaultEngine. But it don't help.


The project Launcher works well:


But the multiplayer doesn't work too. In the console at attempt to create session or find session - writes these errors:

Please, help me. What I need to do for solve a problem?

[King Scott]

Look at [ProjectName].Build.cs and uncomment the section labeled uncomment if your using online features.

[zzzlor]

Thank you very much, but It didn't help. When I launch project - error again:

[Arturogalaxy]

Exactly same problem here on my iPhone, could anybody please help on this issue?