Anaconda env issue

[ForeverNightmare]

Hi,
I'm trying to run your project but I failed in creating anaconda environment. I met this issue:

Pip subprocess error:
ERROR: Could not find a version that satisfies the requirement detectron2==0.5+cu111
ERROR: No matching distribution found for detectron2==0.5+cu111
failed

How should I fix this issue?

[ForeverNightmare]

Besides this one, there are 4 more packages that cant be installed:
en-core-web-lg==2.3.1
en-core-web-sm==2.3.1
python-graphviz==0.16
gmatch4py==0.2.5b0