NameNotFound Error at the Colab File

[kkaytekin]

Hi there,
first of all, thanks for making this work available.
I wanted to go through the Colab Notebook provided at the header of the readme file. In the second block of the Setup section, there are some errors that block us from running the following blocks. Changing it from

%cd /content

!git clone https://github.com/jannerm/diffuser.git
!git checkout 06b8e6a042e6a3312d50ed8048cba14afeab3085
!curl -L -o diffuser-pretrained.tar https://www.dropbox.com/s/1x73p8x66mj7dvk/diffuser-pretrained.tar?dl=1
!tar -xf diffuser-pretrained.tar
!mv diffuser-pretrained/logs diffuser/logs
!rm -r diffuser-pretrained*

%cd diffuser
%pip install -f https://download.pytorch.org/whl/torch_stable.html \
                typed-argument-parser \
                scikit-image==0.17.2 \
                scikit-video==1.1.11 \
                gitpython \
                einops \
                pillow \
                free-mujoco-py \
                gym \
                git+https://github.com/JannerM/d4rl.git@0e84a4d29db3ae501043215ce1d91843929f1949 \
                git+https://github.com/aravindr93/mjrl

%pip install -e .

to

%cd /content

!git clone https://github.com/jannerm/diffuser.git
%cd diffuser
!git checkout 06b8e6a042e6a3312d50ed8048cba14afeab3085
%cd /content
!curl -L -o diffuser-pretrained.tar https://www.dropbox.com/s/1x73p8x66mj7dvk/diffuser-pretrained.tar?dl=1
!tar -xf diffuser-pretrained.tar
!mv diffuser-pretrained/logs diffuser/logs
!rm -r diffuser-pretrained*

%cd diffuser
%pip install -f https://download.pytorch.org/whl/torch_stable.html \
                typed-argument-parser \
                scikit-image==0.17.2 \
                scikit-video==1.1.11 \
                gitpython \
                einops \
                pillow \
                free-mujoco-py \
                gym==0.18.0 \
                git+https://github.com/JannerM/d4rl.git@0e84a4d29db3ae501043215ce1d91843929f1949 \
                git+https://github.com/aravindr93/mjrl

%pip install -e .

solves the issue. Maybe you might want to change the corresponding part of ./scripts/diffuser_sample.ipynb as well :)

Best,
Kagan

[matinmoezzi]

Thanks. It solved the "Environment hopper-medium-expert doesn't exist" issue.