Hello,
I'm currently running OPNsense version 26.1.2. When I attempt to remove a gateway group, I receive the following error:
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:
[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
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.
Thank you for the clarification. I can confirm that this was indeed the issue (we removed old rules after migration by running the removal script). I applied your suggested workaround by adding an old style rule, and after that I was able to successfully delete the gateway group.
Thanks again for the guidance!
Glad you got it sorted. I've created a bug report for this now https://github.com/opnsense/core/issues/9792
Thanks. Patch here https://github.com/opnsense/core/issues/9792#issuecomment-3907589714
Cheers,
Franco