Really simple captcha et php 7.4

Hello , really simple captcha doesn’t work with php 7.4 :
Détails de l’erreur
======================
Une erreur de type E_ERROR a été causée dans la ligne 127 du fichier /htdocs/wp-content/plugins/really-simple-captcha/really-simple-captcha.php. Message d’erreur : Uncaught Error: Call to undefined function imagettftext() in /htdocs/wp-content/plugins/really-simple-captcha/really-simple-captcha.php:127
Stack trace:
#0 /htdocs/wp-content/plugins/contact-form-7/modules/really-simple-captcha.php(512): ReallySimpleCaptcha->generate_image(2054591409, ‘K9HW’)
#1 /htdocs/wp-content/plugins/contact-form-7/modules/really-simple-captcha.php(63): wpcf7_generate_captcha(Array)
#2 /htdocs/wp-content/plugins/contact-form-7/includes/form-tags-manager.php(340): wpcf7_captchac_form_tag_handler(Object(WPCF7_FormTag))
#3 /htdocs/wp-content/plugins/contact-form-7/includes/form-tags-manager.php(269): WPCF7_FormTagsManager->scan_callback(Array, true)
#4 [internal function]: WPCF7_FormTagsManager->replace_callback(Array)
#5 /htdocs/wp-content/plugins/contact-form-7/includes/form-tags-manager.php(186): preg_replace_callback(‘/(\\[?)\\[(accept…’, Array, ‘ Votr…’)
#6 /htdocs/wp-content/plugins/contact-form-7/includes/form-tags-manager.php(168): WPCF7_FormTagsManager->scan(‘

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