Problems with the statistics chart

I realized a few days ago that after activating the logs on August 1, 2022, and clearing the old logs, there is a problem with the request graphs, it seems to be off, anyway that's what sure there is a problem...
This morning for example, there was no request on July 31, and now, 3626, and in 5 minutes there will be even more, can you help me? (The screenshots show the number of requests increasing in French).