I'm using PyBind11 to allow use of Python code within my C++ application. The application links successfully, but on the py::module::import below: LOGICAL WebServer:: CheckForPort() { EPython::Prepare(); auto socket = py::module::import("socket"); auto s = socket.attr("socket")(socket.attr("AF_INET"),socket.attr("SOCK_STREAM")); if (s == Py_None) return L_TRUE; auto rc = s.attr("connect_ex")("localhost",8810); // // Returns zero if port in in use // return (rc.cast<int>() == 0); } I get a run-time error libc++abi: terminating due to uncaught exception of type pybind11::error_already_set: ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/lib-dynload/math.cpython-311-darwin.so, 0x0002): tried: '/Users/Shared/Develop/IntelApps/WinTD 5/DerivedData/WinTDOSX/Build/Products/Debug/math.cpython-311-darwin.so' (no such file), '/usr/lib/system/introspection/math.cpython-311-darwin.so' (no such file, not in dyld cache), '/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/lib-dynload/math.cpython-311-darwin.so' (code signature in <855730B8-106D-389C-BF65-36A98463EDB5> '/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/lib-dynload/math.cpython-311-darwin.so' not valid for use in process: mapping process and mapped file (non-platform) have different Team IDs), I have no idea how to fix the code signature error---this is intended for distribution, so that presumably would be a file on the user's computer. I tried to link in the .so file, but that's a rabbit hole as there are a near endless set of further dependencies.