Fatal Error After Moving a Website

I can’t reproduce the problem.
Did you try to uninstall it and then to reinstall it ?
Make sure to remove any line in your PHI INI (.user.ini) file when you reinstall it, just in case.

I uninstalled it before the migration to ensure no 500 error code.

I re-installed it after the migration but I can’t activate it. There is no .user.ini file, it is deleted. I can’t activate the plugin, I get the same error.

Can you run the troubleshooter script: https://nintechnet.com/share/wp-check.txt

1. Rename it to “wp-check.php”.
2. Upload it into your WordPress root folder.
3. Go to https://YOUR WEBSITE/wp-check.php
4. Delete it afterwards.

Hi!

I got exactly the same problem today, move my website and being unable to activate NinjaFirewall. I deleted the whole folder from the plugins folder and installed NinjaFirewall again afterwards, but not success.

[09-Oct-2024 13:06:16 UTC] PHP Fatal error:  Uncaught Error: Undefined constant "NFW_RULES" in /home/website/domains/website.nl/public_html/wp-content/plugins/ninjafirewall/lib/install_default.php:171
Stack trace:
#0 /home/website/domains/website.nl/public_html/wp-content/plugins/ninjafirewall/ninjafirewall.php(161): nfw_load_default_conf()
#1 /home/website/domains/website.nl/public_html/wp-includes/class-wp-hook.php(324): nfw_activate()
#2 /home/website/domains/website.nl/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#3 /home/website/domains/website.nl/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()
#4 /home/website/domains/website.nl/public_html/wp-admin/includes/plugin.php(703): do_action()
#5 /home/website/domains/website.nl/public_html/wp-admin/plugins.php(60): activate_plugin()
#6 {main}
  thrown in /home/website/domains/website.nl/public_html/wp-content/plugins/ninjafirewall/lib/install_default.php on line 171

Here is the result from the wp-check.php file:

NinjaFirewall (WP edition) troubleshooter
HTTP server	:	LiteSpeed
PHP version	:	8.3.11
PHP SAPI	:	LITESPEED
 	 	 
auto_prepend_file	:	none
wp-config.php	:	found in /home/website/domains/website.nl/public_html/wp-config.php
NinjaFirewall detection	:	NinjaFirewall is not loaded
 	 	 
Loaded INI file	:	/opt/alt/php83/etc/php.ini
user_ini.filename	:	.user.ini
user_ini.cache_ttl	:	300 seconds
User PHP INI	:	none found
 	 	 
DOCUMENT_ROOT	:	/home/website/domains/website.nl/public_html
ABSPATH	:	/home/website/domains/website.nl/public_html/
WordPress version	:	6.6.2
WP_CONTENT_DIR	:	/home/website/domains/website.nl/public_html/wp-content
Plugins directory	:	/home/website/domains/website.nl/public_html/wp-content/plugins
User Role	:	Administrator
User Capabilities	:	manage_options: OK - unfiltered_html: OK
Log dir permissions	:	/home/website/domains/website.nl/public_html/wp-content/nfwlog dir is writable
Cache dir permissions	:	/home/website/domains/website.nl/public_html/wp-content/nfwlog/cache dir is writable
Configuration & Rules	:	
* Options: not found

* Rules: not found

NinjaFirewall (WP edition) troubleshooter v1.10

Thank you!

• This reply was modified 1 month, 2 weeks ago by janij. Reason: Additional information

Can you run this script: https://nintechnet.com/share/ninja-connect.txt
1. Rename it to “ninja-connect.php”.
2. Upload it into your website root folder.
3. Go to https://YOUR WEBSITE/ninja-connect.php
4. Delete it afterwards.

That will check if your site can connect to download the rules during the installation process.

Didn’t change a thing after my last message, but just now I managed to activate the plug-in.

After it I did try the ninja-connect.php file and got this back:

Attempting to connect to:
	* updates.nintechnet.com/index.php (HTTPS): OK
	* wordpress.nintechnet.com/index.php (HTTPS): OK
	* pro.nintechnet.com/index.php (HTTPS): OK
	* api.nintechnet.com/test (HTTPS): OK
	* plugins.svn.www.ads-software.com/ninjafirewall/updates/version3.txt (HTTPS): OK


NinjaFirewall (WP/WP+/Pro/Pro+ editions) connection test script v1.3

Don’t know what changed since last time, but the problem is fixed for me now.

I encountered the same issue. After deleting /wp-content/nfwlog, I was able to activate it properly.

I got the very same problem. Would be great if there would be a fix sometime? Have to move websites from one server to another server fromt time to time.

This problem seems to be new, because otherwise a migration usually went smoothly (deactivate full-WAFF mode, deactivate Ninja Firewall and uninstall. After the migration, reinstalling the Ninja Firewall always went smoothly)

Edit: After deleting /wp-content/nfwlog, I was able to activate it properly. Thanks SHAO!!!

• This reply was modified 2 weeks, 3 days ago by NDwordpress0711.
• This reply was modified 2 weeks, 3 days ago by NDwordpress0711.
• This reply was modified 2 weeks, 3 days ago by NDwordpress0711.

I’m currently looking at it.
The issue seems very new but the code where the error occurred hasn’t been changed for years.

I found the problem. I will be fixed in the next release.