Unable to connect the port

[ghost]

The sample run successfully but the console shows these error. To my assumption, the latest OS(Mac OS Sierra/ Openframework 9.8) no longer support the port. Any one have the solution to fix this problem?

[ error ] SerialDevice::setup: IO Exception (2): No such file or directory, file /Users/hoyin1994/Documents/of_v0.9.8_osx_release/addons/ofxSerial/libs/serial/src/impl/unix.cc, line 151. [ error ] ofApp::setup: Unable to connect to: /dev/tty.usbmodem411