Tensorboard log file not generated

Describe the bug In Stable Baseline, if I train sac.SAC with tensorboard_log='./logs/', I get a Tensorboard log in ./logs/SAC_1/. But, in Stable Baselines 3, with the same keyword argument, a Tensorboard log is not generated.

Code example If I run my training script with

    import stable_baselines as sb

    # soft actor critic
    agent = sb.sac.SAC(
        sb.sac.MlpPolicy,
        env,
        tensorboard_log='./logs/',
    )

I get a log at ./logs/SAC_1/events.out.tfevents.1594902758.machinename.

But, if I run the equivalent in this updated version as so

    import stable_baselines3 as sb

    # soft actor critic
    agent = sb.sac.SAC(
        sb.sac.MlpPolicy,
        env,
        tensorboard_log='./logs/',
    )

the previous log generation doesn’t happen.

System Info

• Everything is installed via pip if possible
• Python 3.6.9
• torch 1.5.0
• tensorboard 1.14.0

[cisprague]

Got it! I needed to uninstall my current version, then reinstall with the [extra] tag. Thanks for your help.

[araffin]

Then please fill up the issue template completely.