PHP Fatal error: Declaration of Drupal\\flag_anon\\FlagAnonLinkBuilder::build($entity_type_id, $entity_id, $flag_id)

I reopened this because it still seems to be an issue: https://drupal.slack.com/archives/C1BB308HH/p1737753467044569

In the current version of the flag module, there's FlagLinkBuilderInterface::build($entity_type_id, $entity_id, $flag_id, $view_mode = NULL); defined in https://git.drupalcode.org/project/flag/-/blob/8.x-4.x/src/FlagLinkBuild...

However, the current version of this module's FlagAnonLinkBuilder::build is missing the last argument. I'll add a MR.

I second tolstoydotcom on this. I'm experiencing this too and can verify. had to update a custom module as well. Can we get a patch until then, please?

Adding patch with these changes

Another change needs to be made. On line 87 of FlagAnonLinkBuilder.php, the fourth argument for $view_mode needs to be added to the parent::build. Patch includes both changes.

We were experiencing the same error on our site. The patch in #9 seems to have resolved the issue for us. Thanks! 😊

We also experienced the same issue on our site, the #9 patch resolved the issue.
Everything else also seems to be working fine and this issue can be closed.
Thanks.

Hi @all
Yes, I have apply it in my resent work and it's working. I am wait for this patch in new version.
@mighty_webber thanks