Issue Removing Gateway Group - PHP Fatal Error

[namphy]

Hello,
I'm currently running OPNsense version 26.1.2. When I attempt to remove a gateway group, I receive the following error:

Code Select Expand

PHP Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /usr/local/www/system_gateway_groups.php:41
This error prevents the gateway group from being removed. The gateway group was created by mistake, as I only have one gateway. I can reproduce this issue by creating a second gateway group, adding my gateway to it, and then attempting to remove the group. The same error occurs, and the gateway is not removed.

I have two OPNsense routers, and I was able to replicate this issue on both of them.

Let me know if you need any additional information.

Error Details:

Code Select Expand

[REDACTED-TIMESTAMP] PHP Fatal error:  Uncaught TypeError: Cannot access offset of type string on string in /usr/local/www/system_gateway_groups.php:41
Stack trace:
#0 {main}
  thrown in /usr/local/www/system_gateway_groups.php on line 41
[REDACTED-TIMESTAMP] PHP Fatal error:  Uncaught TypeError: Cannot access offset of type string on string in /usr/local/www/system_gateway_groups.php:41
Stack trace:
#0 {main}
  thrown in /usr/local/www/system_gateway_groups.php on line 41

[Ben S]

This looks like it's due to not having any old style rules.  I'm guessing you've migrated to new style rules, and deleted all of your old rules?  I can reproduce this by ensuring at least one old style rule exists, running step 5 of the rules migration, and then trying to delete a gateway group.  Deleting the last rule by hand doesn't cause the problem.

As a workaround until this is fixed, if you add any old style rule (even if it is disabled) then you should be able to delete the gateway group.