Fatal error – missing encode_input_field() function

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Plugin version 2.3.8

[29-Dec-2025 10:51:22 UTC] PHP Fatal error: Uncaught Error: Call to undefined method OnlineOptimisation\EmailEncoderBundle\Validate\Filters::encode_input_field() in /wp-content/plugins/email-encoder-bundle/src/Validate/Filters.php:251
Stack trace: 0 [internal function]: OnlineOptimisation\EmailEncoderBundle\Validate\Filters->OnlineOptimisation\EmailEncoderBundle\Validate{closure}() 1 /wp-content/plugins/email-encoder-bundle/src/Validate/Filters.php(256): preg_replace_callback() 2 /wp-content/plugins/email-encoder-bundle/src/Validate/Filters.php(122): OnlineOptimisation\EmailEncoderBundle\Validate\Filters->filter_input_fields()