413 Request Entity Too Large nginx/1.19.8

Hello people

I am trying to upload a file of 53 MB as WordPress theme and i got this error:
SEMrush

413 Request Entity Too Large
nginx/1.19.8

This is first time that i receive this message.Before it was normal to upload themes,but now i got this error.

My server is Cenots, Apache.

Why this appear?