Error when try to receive serialport information from STM32 in Mac

I'm using the following MATLAB code to receive the speed info from an STM32 using macOS. I have already printed the speed information in the console, and the port information is '/dev/tty.usbmodem14303' from the % ls /dev/tty.* command. However, I encountered the following error on this line: s = serialport(port, baudrate);, even though the baud rate is correct. Any ideas? thanks.

here is what I get from the console:

% Specify serial port and baud rate
port = "/dev/tty.usbmodem14303";
baudrate = 115200;

% Create a serial port object
s = serialport(port, baudrate);

% Prepare the figure for plotting
figure;
hold on; % Keep the plot visible as we add new points
grid on; % Add a grid for better visibility
xlabel('Time (s)');
ylabel('Serial Data');
title('Real-time Serial Port Data');

% Initialize a variable to store the start time of the plot
startTime = datetime('now');

% Initialize an empty array to store data points
data = [];

% Loop to read and plot data
while 1
    % Check if data is available to read
    if s.NumBytesAvailable > 0
        % Read the available data from the serial port
        newData = readline(s);
        
        % Convert the read data to a numeric value
        % Note: This assumes the data can be directly converted. You may need to adjust this
        % part depending on the format of your incoming data.
        newData = str2double(newData);
        
        % Append the new data to our data array
        data(end+1) = newData;
        
        % Compute the elapsed time since the start of plotting
        elapsedTime = seconds(datetime('now') - startTime);
        
        % Generate a time vector for the x-axis
        timeVector = linspace(0, elapsedTime, numel(data));
        
        % Plot the updated data
        plot(timeVector, data, 'b-'); % Plot as a blue line
        drawnow; % Update the plot
        
        % This part is optional and allows the plot to auto-scroll
        % Adjust xlim to show a specific window of recent data
        if elapsedTime > 10 % Adjust this to your preferred window size in seconds
            xlim([elapsedTime-10, elapsedTime]); % Show the last 10 seconds of data
        end
    end
end

% Close the serial port when done
clear s

[Chetan]

hi @Yuhong,

can you share the error code you are facing