Error (no connexe boundary be careful with internal boundary (pb of sens) ) : nb start = 2

Does anyone have an idea what’s going wrong?
The first remeshing works perfectly fine, but the second time of remeshing shows the this error;

error (no connexe boundary be careful with internal boundary (pb of sens) ) : nb start = 2

hydrogel_2.edp (4.3 KB)

The code extractborder works only on connexe part.
so call it for each connexe part by setting the label

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