"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: And it work:

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