Unable to upload Firmware Upgrade Image .tar files

im try to upload Admin > Files new files .tar but erorr showing
Unexpected response status code 413

give me any solution

How large is the firmware file? HTTP 413 is “Content Too Large”

I searched through the code, and GenieACS does not directly emit a 413 status code. Do you have a reverse proxy in front of your GenieACS UI that could be filtering upload sizes?

file only size 12MB im not use proxy