Can someone help with this error?

-> "[error] 58#58: *80 client intended to send too large body: 2029414 bytes".

I'm trying to upload and image but i get this error. I guess i have to set a configuration with the server and do somenthing like this: "client_max_body_size 250M;" but i don't know where to applied. Right now i'm just using Laravel and Psql services.

Thanks.