One or more output arguments not assigned during call to "sim"

Hello support team,

I have created a Java Package from the following MATLAB code:

function  DTX_Vibration()
prompt = '\n Enter the bearing speed (100-400 RPM) =  \n ';
speed = input(prompt);
y = (0.4/300)*speed;
assignin('base','InputTorque',y);

a = sim('DTX','SaveOutput','on','OutputSaveName','shaft'); % shaft is a 'To Workspace' block in Simulink to capture the timeseries data.
  a.find('shaft');
  output = a.get('shaft');
  assignin('base','output1',output);
  
T = table(output.time,output.Data,'VariableNames',{'Time-sec','Amplitude-mm'});
plot(output.time,output.Data);
title('Vibration signal from the impacted Bearing in Time Domain');
xlabel('Time');
ylabel('Amplitude');
print('vibrations','-djpeg');
filename = 'vibration_shaft.csv';
writetable(T,filename);
end

when the code is executed in Matlab, it is working fine without any error and creates a csv flie containing the timeseries data obtained from the simulink model 'DTX'.

After creating the java package from the library compiler, I executed it through the Windows command prompt as follwos:

javac -cp DTX_Vibration.jar;"C:/Program Files/MATLAB/MATLAB Runtime/v97/toolbox/javabuilder/jar/javabuilder.jar" DTX_VibrationSample1.java

java -cp .;DTX_Vibration.jar;"C:/Program Files/MATLAB/MATLAB Runtime/v97/toolbox/javabuilder/jar/javabuilder.jar" DTX_VibrationSample1

Then I get the follwing error in the command prompt:

... Matlab M-code Stack Trace ...

com.mathworks.toolbox.javabuilder.MWException: One or more output arguments not assigned during call to "sim".

at com.mathworks.toolbox.javabuilder.internal.MWMCR.mclFeval(Native Method)

at com.mathworks.toolbox.javabuilder.internal.MWMCR.access$600(MWMCR.java:33)

at com.mathworks.toolbox.javabuilder.internal.MWMCR$6.mclFeval(MWMCR.java:897)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.mathworks.toolbox.javabuilder.internal.MWMCR$2.invoke(MWMCR.java:784)

at com.sun.proxy.$Proxy0.mclFeval(Unknown Source)

at com.mathworks.toolbox.javabuilder.internal.MWMCR.invoke(MWMCR.java:447)

at DTX_Vibration.Class1.DTX_Vibration(Class1.java:227)

at DTX_VibrationSample1.DTX_VibrationExample(DTX_VibrationSample1.java:29)

at DTX_VibrationSample1.main(DTX_VibrationSample1.java:46)

Please help me on how to use the sim command when assigned as shown in the code.

Thanks for your support.