That error is because the python encapsulated in OpenSignals is for Ubuntu amd64 and your architecture is different.
My advice to you is that you use your own python (should be already installed on your OS), install the dependencies and run OpenSignals with it.
To change the python that OpenSignals use, edit the file:
and replace the line
with the new python executable directory.
After changing this path, run this script from the terminal and install the modules that are missing:
"No module named X"
Let me know if it works,