Update:
Thank you all for your help
Through investigation yesterday, I have found the reason. The keyword ranking page lost its index, which caused the keyword ranking to disappear.
Currently the page has been re-indexed by Google, and the keyword ranking has been restored.
Probably the engineMy car just stopped working. Can you guys please tell me which part of the car is it?
Wait for a few days, it will probably start working by itself again. There must be someone else to blame. It can't be a problem on your end right...My car just stopped working. Can you guys please tell me which part of the car is it?
Probably the engine
My question is same like the OP.Wait for a few days, it will probably start working by itself again. There must be someone else to blame. It can't be a problem on your end right...
Gave the answer based on that many people always blame the updates for everything because their sites are "perfect" and can't be the reason to blame. It might as well be the updates, update of pointing out that there is something wrong with your site.My question is same like the OP.
It can be many reasons, but without knowing all or at least some factors, we can't know why the site disappeared.