Error message in a loop

Hi there,

The answer to my question may be obvious:
In one of my loops I have an error message but I still get the expected result.


The message is:

Errors
The geometry for Construction/Accumulateur_2/ol/List.0/Results.159/Body failed to be stored in the model


It's not the first time that I realize this type of loop, and the input values ​​are clean.

Do you have any advice to remove the error ?

Thank you ! 


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