Unable to upload file to website on Plesk: Request body no files data length is larger than the configured limit

1. Log into the server via SSH.

2. Open /etc/asl/config file using the vi text editor.

3. Increase the value for the WAF_SECREQUESTBODYNOFILESLIMIT directive, for example to the value as below (specified in Bytes):

   CONFIG_TEXT: WAF_SECREQUESTBODYNOFILESLIMIT "10000000"

4. Execute the command below to update the rulesets:

   # for i in daily weekly monthly; do /usr/local/psa/bin/sw-engine-pleskrun /usr/local/psa/admin/plib/DailyMaintainance/script.php -f UpdateModSecurityRuleSet --period "${i}"; done

This way the change will remain persistent after any updates/rulesets changes.

For Debian based systems (Ubuntu/Debian):

1. Check if SecRequestBodyNoFilesLimit is not defined in Apache configuration:

   # grep -r SecRequestBodyNoFilesLimit /etc/apache2/
   #

2. If it is defined, increase this value. If not, define SecRequestBodyNoFilesLimit by creating limits.conf file:

   # printf "SecRequestBodyNoFilesLimit 10000000\n" > /etc/apache2/modsecurity.d/limits.conf

3. Reload the service:

   # service apache2 reload

For RHEL-based systems (CentOS/CloudLinux/AlmaLinux):

1. Check if SecRequestBodyNoFilesLimit is defined in Apache configuration:

   # grep -r SecRequestBodyNoFilesLimit /etc/httpd
   #

2. If it is defined, increase its value. If not, define SecRequestBodyNoFilesLimit by creating limits.conf file:

   # printf "SecRequestBodyNoFilesLimit 10000000\n" > /etc/httpd/conf/modsecurity.d/limits.conf

3. Reload the service:

   # service httpd reload