That link doesn't contradict what I said? I said in summer last year (almost?, at the time I saw 2 different sources, one French said all, one German said almost all) all nuclear power plants were offline. Macron even went on TV arguing that they pulled forward maintenance to "prepare for the winter to support the German's lack of Gas" (seems not to happened according to your link, they were on record low output at the turn of the year).
The link shows ~25 reactors were up in the summer at the low point, out of 58.
If you want another link: [2] states that about half of the reactors were down. I don't know what news sites you use, but "almost all" or "all" reactors being down is simply false news.
[1]: https://www.spglobal.com/commodityinsights/en/market-insight...