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+### Modify NGINX Configuration File
+
+```
+sudo nano /etc/nginx/nginx.conf
+```
+
+Search for this variable: **client_max_body_size**. If you find it, just increase its size to 100M, for example. If it doesn’t exist, then you can add it inside and at the end of http
+
+```
+client_max_body_size 100M;
+```
+
+Restart nginx to apply the changes.
+
+```
+sudo service nginx restart
+```
+
+### Modify PHP.ini File for Upload Limits
+
+t’s not needed on all configurations, but you may also have to modify the PHP upload settings as well to ensure that nothing is going out of limit by php configurations.
+
+If you are using PHP5-FPM use following command:
+
+```
+sudo nano /etc/php5/fpm/php.ini
+```
+
+If you are using PHP7.0-FPM use following command:
+
+```
+sudo nano /etc/php/7.0/fpm/php.ini
+```
+
+Now find following directives one by one
+
+```
+upload_max_filesize
+post_max_size
+```
+
+and increase its limit to 100M, by default they are 8M and 2M.
+
+```
+upload_max_filesize = 100M
+post_max_size = 100M
+```
+
+Finally save it and restart PHP.
+
+PHP5-FPM users use this:
+```
+sudo service php5-fpm restart
+```
+
+PHP7.0-FPM users use this:
+```
+sudo service php7.0-fpm restart
+```
+
+[source](https://serverfault.com/questions/814767/413-request-entity-too-large-in-nginx-with-client-max-body-size-set)
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