Why am I unable to import an FMU after exporting it from a Simulink project?

I am able to import FMU files that come from another tool. However, when I export an FMU from a Simulink Project and I try to import it back to Simulink, the model gets stuck in the initializing stage. I also tried running the following command in the MATLAB command window:

>> shareMATLABForFMUCoSim

In this case, I got the following error message:

"Error in supplied FMU: An error occurred in function 'fmi2Instantiate' for block 'Mymodel/FMU' during simulation. To view debug logs, open FMU log file. For more information, see the FMU troubleshooting documentation."

Then, I open the FMU log file which says the following:

Debug Logging enabled for block 'MyModel/FMU'
Log from FMU: [category:logStatusError, status:fmi2Error] Cannot find available MATLAB session open for co-simulation.
Log from FMU: [category:logStatusError, status:fmi2Error] fmi2Instantiate: Cannot find or connect to existing MATLAB session.

Answer 1

[MathWorks Support Team]

The issue is that there is not an available MATLAB session to run the co-simulation.These are the steps to resolve the issue:

1) Open a new instance of MATLAB.

2) Execute the following command in the MATLAB command window of the new MATLAB instance:

>> shareMATLABForFMUCoSim

Note: please do not run anything else in this new instance of MATLAB.

3) After importing the FMU in the first instance of MATLAB, run the model.