Reported for: Advanced Custom Fields Multilingual 2.0.2
Resolved in: 2.0.4
Overview of the issue
In ACFML 2.0.0, a fatal error occurs when the user’s admin language is set to French and you attempt to edit a post containing field groups with different translation options:
PHP Fatal error: Uncaught ValueError: Unknown format specifier “t” in …/wp-content/plugins/acfml/classes/Post/MixedFieldGroupModesHooks.php:53
Before applying the workaround, please create a full backup of your website to prevent any data loss or issues.
- Go to the …/wp-content/plugins/acfml/languages/ directory.
- Look for the acfml-fr_FR.mo file.
- Delete it.