u/Hefty_Comedian76

I'm setting up PPO training with Learning Agents in UE 5.7.4 and running into issues.

Error message:

"ExternalTrainerProcess was null, but attach to existing trainer process

was false. Either pass in external trainer process or set bUseExternalTrainer"

The problem:

Make Shared Memory Training Process's Return Value cannot be connected

to Make Shared Memory Communicator's Trainer Process pin - type mismatch.

When I connect Make Shared Memory Communicator to Make PPOTrainer's

Communicator pin without the Trainer Process connected, the trainer

fails to create.

Questions:

1. What node should connect to the Trainer Process pin of

   Make Shared Memory Communicator?

2. Is there a correct blueprint setup example for PPOTrainer in 5.7.4?

https://preview.redd.it/0zbyxhalggyg1.png?width=1284&format=png&auto=webp&s=86ff6406d0e8da36362cde4c67fb054967c4cf83