ImportError: cannot import name ‘EncryptedSignedIntegerType’ from ‘concrete.lang.dialects.fhe’
Hello, it looks like you might be trying to use one of our latest Concrete ML version (>=1.0.0) with Concrete Numpy, which is an older version of Concrete Python.
Are you using a virtual environment ? And if so, did you try to manually install Concrete Python at one point ? Maybe you could indicate which versions your are using ( pip show concrete-ml, pip show concrete-python, pip show concrete-numpy) 
Keep me posted !