'Graph using D3 I can not resolve my problem

I am using this code to create my tree graph, but I have an error when I am trying to use this with my data.

I have this following error everytimes :

Uncaught Error: missing: Guillaume Budé.correspond avec
    at stratify (d3.v4.js:10490:28)
    at graphe_v2.html:48:19
    at Object.<anonymous> (d3.v4.js:11470:86)
    at Dispatch.call (d3.v4.js:792:72)
    at XMLHttpRequest.respond (d3.v4.js:11395:13)

And this is an example of my flare.csv :

id,value
Guillaume Budé,
Guillaume Budé.correspond avec.Arnaud Le Ferron,Arnoul de Ferron,
Guillaume Budé.correspond avec.Nicolas Bourbon (1),Borbonius Vandoperanus,Nicolas Bourbon l'Ancien,
Guillaume Budé.correspond avec.François Duaren,Franciscus Duarenus,François Douaren,François Le Douaren,
Guillaume Budé.correspond avec.François Rabelais,Franciscus Rabelaesus,Maître François,Alcofribas Nasier,
Guillaume Budé.correspond avec.Niccolò Leonico Tomeo,Nicolaus Leonicus Thomaeus,Nicolaus Leonicus Thomaeus Epirota,Nicolaus Leonicus Tomaeus,
Guillaume Budé.correspond avec.Pierre Lamy,Petrus Amicus,Pierre L'Amy,Pierre Ami,
Guillaume Budé.correspond avec.Érasme,Desiderius Erasmus Roterodamus,Didier Érasme,Désiré Érasme,Geert Gerhardt,
Guillaume Budé.correspond avec.Lazare de Baïf,Bayfius,Bayfus,
Guillaume Budé.correspond avec.Richard Croke,Richard Crocus,
Guillaume Budé.correspond avec.Georges d'Armagnac,
Guillaume Budé.correspond avec.Jacques Colin,Jacques Collin,
Guillaume Budé.correspond avec.Leonard Pomar,Leonardo Pomar,Leonard Pomard,

And this is my JSON file :

{"name": "Guillaume Budé",
     "children": [
      {
      "name": "correspond avec",
      "children": [
             {"name": "Arnaud Le Ferron,Arnoul de Ferron"},
             {"name":"Nicolas Bourbon (1),Borbonius Vandoperanus,Nicolas Bourbon l'Ancien"},
             {"name":"François Duaren,Franciscus Duarenus,François Douaren,François Le Douaren"},
             {"name":"François Rabelais,Franciscus Rabelaesus,Maître François,Alcofribas Nasier"},
             {"name":"Niccolò Leonico Tomeo,Nicolaus Leonicus Thomaeus,Nicolaus Leonicus Thomaeus Epirota,Nicolaus Leonicus Tomaeus"},
             {"name":"Pierre Lamy,Petrus Amicus,Pierre L'Amy,Pierre Ami"},
             {"name":"Érasme,Desiderius Erasmus Roterodamus,Didier Érasme,Désiré Érasme,Geert Gerhardt"},
             {"name":"Lazare de Baïf,Bayfius,Bayfus"},
             {"name":"Richard Croke,Richard Crocus"},
             {"name":"Georges d'Armagnac"},
             {"name":"Jacques Colin,Jacques Collin"},
             {"name":"Leonard Pomar,Leonardo Pomar,Leonard Pomard"}
        ]
      }
}

Anyone know how can I resolve my problems ?

javascript d3.js

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'Graph using D3 I can not resolve my problem

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