Courbe de remous: `NaN` produit lors d'un fuzzy test

Voici la session qui provoque des NaN dans les résultats de la ligne d'eau:

{
    "header": {
        "source": "jalhyd",
        "format_version": "1.3",
        "created": "2023-01-12T09:36:02.886Z"
    },
    "settings": {
        "precision": 1e-7,
        "maxIterations": 100
    },
    "documentation": "",
    "session": [
        {
            "uid": "eW03eD",
            "props": {
                "calcType": "CourbeRemous",
                "methodeResolution": "RungeKutta4"
            },
            "children": [
                {
                    "uid": "eTFhM3",
                    "props": {
                        "calcType": "Section",
                        "nodeType": "SectionRectangle"
                    },
                    "children": [],
                    "parameters": [
                        {
                            "symbol": "Ks",
                            "mode": "SINGLE",
                            "value": 183318.82545429736
                        },
                        {
                            "symbol": "Q",
                            "mode": "SINGLE",
                            "value": 390520.50182428386
                        },
                        {
                            "symbol": "YB",
                            "mode": "SINGLE",
                            "value": 89186.33130916388
                        },
                        {
                            "symbol": "LargeurBerge",
                            "mode": "SINGLE",
                            "value": 80343.68739869402
                        }
                    ]
                }
            ],
            "parameters": [
                {
                    "symbol": "Long",
                    "mode": "SINGLE",
                    "value": 237791.20727364928
                },
                {
                    "symbol": "Dx",
                    "mode": "SINGLE",
                    "value": 213157.50980859614
                },
                {
                    "symbol": "Z1",
                    "mode": "SINGLE",
                    "value": 627398.7148377055
                },
                {
                    "symbol": "Z2",
                    "mode": "SINGLE",
                    "value": 531324.1968851855
                },
                {
                    "symbol": "ZF1",
                    "mode": "SINGLE",
                    "value": 875611.595287587
                },
                {
                    "symbol": "ZF2",
                    "mode": "SINGLE",
                    "value": -388723.787034392
                }
            ]
        }
    ]
}