end of build.sh output with error

error.txt

+ pip install -r linux_macos.txt
Processing /home/elw/git-work/lbry-app/lbryum
Processing /home/elw/git-work/lbry-app/lbry
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-yjmm1575-build/setup.py", line 50, in <module>
        long_description = f.read().decode('utf-8')
    AttributeError: 'str' object has no attribute 'decode'
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-yjmm1575-build/