It appears that you are encountering an issue with connecting MATLAB 2023a to LEGO EV3 over WiFi, specifically with an error in the Telnet_IO.m file.
A similar issue was resolved for me by updating the Simulink Support Package for LEGO MINDSTORMS EV3 Hardware.
You can find the support package here: https://www.mathworks.com/matlabcentral/fileexchange/45075-simulink-support-package-for-lego-mindstorms-ev3-hardware
I recommend trying to update your support package to see if it resolves the problem.
