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module not found markupsafe
I create a virtual env:
> virtualenv -p python3 spectap
I activate it and install packages from requirements.txt in it:
> . spectap/bin/activate
> pip3 install -r requirements.txt
Running ...
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How do i install an previous of flask? [duplicate]
I want to install an older version of flask and can't figure out how to do that and I am using an Linux machine. I checked other questions about how to determine the version of flask but they only ...