Memory issue when exiting OpenFLUIDjs from node.js server app

[eup31000]

When running multiple times the same OpenFLUID simulation model through the OpenFLUIDjs packet on a node.js server, the node.js server seems to crash randomly after the simulation finishes, possibly an indication of a memory corruption somewhere or a compatibility issue with the latest node (using express 4.17.1 in my project):

The call to OpenFluidjs is trivial and as followed:

    OpenFLUID.setCurrentOutputDir(folderOut);
    blob = OpenFLUID.openDataset(folderIn);
    OpenFLUID.runSimulation(blob,true);
    OpenFLUID.deleteBlob(blob);

Attached is an OpenFLUID model to replicate the problem, I can provide more details and model to replicate the problem on demand.
base.zip