I was worried because I hadn't done a remote git push, so I registered on github today. But there was only an empty README, and when I checked, it turned out that everything had been deleted from the Grok app builder too. The code I had written for two weeks was all gone, and they said there was no original.
When I asked why and if you deleted it, they said absolutely not, I didn't do rm, so they told me to figure out in detail how it happened.
And the answer that came out was...
The server sandbox computer rebooted, and they say that the sandbox is originally initialized when it reboots.
What a ridiculous situation...