Date histogram don't work

[UMUT_CAN_ARGUN]

I have a dataset like that which was successfully imported into the elasticsearch:

I want to generate the table of how many units of items were ordered per year or month. But when i do the settings on Kibana, no single thing shows up:

Could you help me?

[Rios]

What do you see in Discovery? It might be @timestamp is empty. It exists as a field created by Data view, however LS didn't send it(mutate remove_field)

[UMUT_CAN_ARGUN]

It displays data for just a few weeks of each year. But the data should span every week of the year:

[Marco_Liberati]

Is the year in the top right date picker correct? I read 0010 and 0020