Title: Fatal error: Uncaught ValueError: Unknown format specifier Last modified: May 20, 2023 --- # Fatal error: Uncaught ValueError: Unknown format specifier * Resolved [fidukoff](https://wordpress.org/support/users/fidukoff/) * (@fidukoff) * [3 years ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-3/) * A plugin error suddenly occurred. The form is not sent, and you cannot log in to the administrative interface with Formentor enabled. * a similar error is observed on another site on another hosting. Sites in Russian. * Please help me ) * Ошибка с типом E_ERROR возникла на строке 85 файла /home/a/atzetlhc/85.wsbs-msu. ru/public_html/wp-content/plugins/forminator/library/fields/captcha.php. Сообщение об ошибке: Uncaught ValueError: Unknown format specifier ” ” in /home/a/atzetlhc/ 85.wsbs-msu.ru/public_html/wp-content/plugins/forminator/library/fields/captcha. php:85 Stack trace: #0 /home/a/atzetlhc/85.wsbs-msu.ru/public_html/wp-content/ plugins/forminator/library/fields/captcha.php(85): sprintf(‘\xD0\xAD\xD1\x82\ xD0\xBE\xD1\x82 \xD1\x81\xD0\xB0\xD0\xB9…’, ”) #1 /home/a/atzetlhc/85.wsbs-msu. ru/public_html/wp-content/plugins/forminator/library/abstracts/abstract-class- field.php(128): Forminator_Captcha->defaults() #2 [internal function]: Forminator_Field- >admin_init_field(”) #3 /home/a/atzetlhc/85.wsbs-msu.ru/public_html/wp-includes/ class-wp-hook.php(308): call_user_func_array(Array, Array) #4 /home/a/atzetlhc/ 85.wsbs-msu.ru/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters( NULL, Array) #5 /home/a/atzetlhc/85.wsbs-msu.ru/public_html/wp-includes/plugin. php(517): WP_Hook->do_action(Array) #6 /home/a/atzetlhc/85.wsbs-msu.ru/public_html/ wp-admin/admin.php(175): do_action(‘admin_init’) #7 /home/a/atzetlhc/85.wsbs- msu.ru/public_html/wp-admin/index.php(10): require_once(‘/home/a/atzetlh…’) # 8 {main} thrown Viewing 5 replies - 1 through 5 (of 5 total) * Thread Starter [fidukoff](https://wordpress.org/support/users/fidukoff/) * (@fidukoff) * [3 years ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-3/#post-16754994) * The problem with the plugin was solved by changing the site language to English. Furminator does not work if the Russian language is set for the site. **Dear developers, please check what the problem is with Cyrillic 🙁** * The plugin does not work immediately when installed on a clean WP 6.2.2 with the Russian language of the site. * Thanks! * [Kris – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport13/) * (@wpmudevsupport13) * [3 years ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-3/#post-16756344) * Hi [@fidukoff](https://wordpress.org/support/users/fidukoff/) * I hope you are doing well today. * I have made a test on my lab site with Russian language and I could not replicate this issue. There is a possibility that this is related to one of your fields. * Can you export your form, upload it to google drive or dropbox and share a link in your next reply so that we could be on the same page with that error and we will try to replicate this. * Kind Regards, Kris * [Kris – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport13/) * (@wpmudevsupport13) * [3 years ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-3/#post-16756388) * Hi again [@fidukoff](https://wordpress.org/support/users/fidukoff/) * I made test once more and I was able to replicate this now. This issue was reported as a bug now to our developers. Right now there is no hotfix available, although our developers will work on that and future update should fix that. * Kind Regards, Kris * Thread Starter [fidukoff](https://wordpress.org/support/users/fidukoff/) * (@fidukoff) * [3 years ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-3/#post-16757473) * Thank you [@wpmudevsupport13](https://wordpress.org/support/users/wpmudevsupport13/)! We will wait! * [vvkwebsite](https://wordpress.org/support/users/vvkwebsite/) * (@vvkwebsite) * [3 years ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-3/#post-16765269) * Thanks for bringing this issue up! * A couple of days ago I faced the same issue on my Russian website and was unable to find a workable solution – at least temporary. Now it’s clarified and I’m in line waiting for the fix because I have to choose between switching to another form providing plugin – and presenting my website in a bad shape with half of the text in English. Viewing 5 replies - 1 through 5 (of 5 total) The topic ‘Fatal error: Uncaught ValueError: Unknown format specifier’ is closed to new replies. * ![](https://ps.w.org/forminator/assets/icon-256x256.gif?rev=3443182) * [Forminator Forms – Contact Form, Payment Form & Custom Form Builder](https://wordpress.org/plugins/forminator/) * [Frequently Asked Questions](https://wordpress.org/plugins/forminator/#faq) * [Support Threads](https://wordpress.org/support/plugin/forminator/) * [Active Topics](https://wordpress.org/support/plugin/forminator/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/forminator/unresolved/) * [Reviews](https://wordpress.org/support/plugin/forminator/reviews/) * 5 replies * 3 participants * Last reply from: [vvkwebsite](https://wordpress.org/support/users/vvkwebsite/) * Last activity: [3 years ago](https://wordpress.org/support/topic/fatal-error-uncaught-valueerror-unknown-format-specifier-3/#post-16765269) * Status: resolved