@samehfrehat

You’re trying to upload a file larger than what is allowed by Nginx - and PHP also has similar configuration.
Here’s an example of allowing 100 MB uploads.

Edit /etc/nginx/nginx.conf. Find/add this line to the http block and restart Nginx:

client_max_body_size 100m;

Edit /etc/php/7.0/fpm/php.ini. Modify these parameters and restart PHP-FPM:

upload_max_filesize = 100M
post_max_size = 100M

@samehfrehat I’m not sure what the default Apache body size is set to, but my guess it’s also limited to 1-2 MB by default.

Did you restart Nginx and PHP-FPM?

sudo service nginx restart
sudo service php7.0-fpm restart

And are you sure, you don’t have the parameters listed in other files, which overwrites the ones you’ve just set.

In Nginx it could be in any file included (look for parameter include) in the main configuration file /etc/nginx/nginx.conf. Search for it:

sudo grep -r "client_max_body_size" /etc/nginx/

In PHP-FPM it could be in any file within /etc/php/. Search for it:

sudo grep -r "upload_max_filesize" /etc/php/
sudo grep -r "post_max_size" /etc/php/

So when you run the search commands (grep), it show this - and only this?

sudo grep -r "client_max_body_size" /etc/nginx/
  /etc/nginx/nginx.conf:client_max_body_size 100m;
sudo grep -r "upload_max_filesize" /etc/php/
  /etc/php/7.0/fpm/php.ini:upload_max_filesize = 100M
  /etc/php/7.0/cli/php.ini:upload_max_filesize = 2M
sudo grep -r "post_max_size" /etc/php/
  /etc/php/7.0/fpm/php.ini:post_max_size = 100M
  /etc/php/7.0/cli/php.ini:post_max_size = 8M

If yes, then I’m guessing Laravel is setting a configuration somewhere, but then try giving Apache a spin if you feel like it.