Just to add its still possible to obtain historic quotes from Morningstar, though amendments have been made to its web structure since 2021 and consequently the JSON URL is now slightly different.
In this particular case you’re interested in ‘FR0011253624’ and you’ve established that info about this fund can be obtained from Graphique de performance du fonds R-co Valor C EUR | Morningstar France. The key here is ‘0P00017T6E’. Detailed below is the amended Morningstar historic quote JSON URL for this fund (i.e. its referenced with ‘0P00017T6E’) and with ‘EUR’ used as the currency.
https://lt.morningstar.com/api/rest.svc/timeseries_price/t92wz0sj7c?currencyId=EUR&idtype=Morningstar&frequency=daily&outputType=JSON&startDate=2020-12-28&id=0P00017T6E]2]0]FOEUR$$ALL
Path to Date = $.TimeSeries.Security[*].HistoryDetail[*].EndDate
Path to Close = $.TimeSeries.Security[*].HistoryDetail[*].Value