WandBLogger only logs system metrics

Hi, I’m recently working with a multi-agent learning environment with pytorch. I tried to log using Tensorboard with tensorboard --logdir=xxx, but this doesn’t show any logged metrics. I then tried to use a wandb logger by doing this:

from ray.tune.integration.wandb import WandbLogger
# Some setup code
run_config["logger_config"] = {
    "wandb": {
        "project": "name1",
        "api_key_file": "./key.txt"
results = tune.run("PPO", config=run_config, loggers=[WandbLogger])

In the wandb logger website only system metrics such as GPU util are logged, and the hyperparameters are all properly logged. What might be the problem here?