Error no matching distribution found for MarkupSafe==1.0
Try making the MarkupSafe requirement from 1.0 to 1.1.1.
Like this:
MarkupSafe==1.1.1
Why is this happening?
As user jbflow states in the comments: "These kind of problems come up when you use a newer version of Python than the one that was used when requirements.txt was frozen."