Need info Error after form submit

Hi Ruud,

My native Joomla form does show this error after submit. ochCaptcha is configured as described in its documentation. I can't figure out what I am doing wrong:
Fout Lege Captcha-oplossing niet toegestaan. Ongeldig veld: Captcha

Debug does bring this to the table:
<script type="application/json" class="joomla-script-options loaded">{"plg_captcha_ochcaptcha":{"version":"2.0.1","debug":true,"verbose":false,"forms":{"submit":{"generic":"3","contact-form":"3"}},"text":{"PLG_CAPTCHA_OCHCAPTCHA_TEXT_ACTIVE":"Beveiligd door ochCaptcha!","PLG_CAPTCHA_OCHCAPTCHA_TEXT_FIELDRULES":"<i>(Min. Woorden: %s | Links: %s)<\/i>","PLG_CAPTCHA_OCHCAPTCHA_TEXT_FORMFIELDS":"<li>Formuliervelden: %s<\/li>","PLG_CAPTCHA_OCHCAPTCHA_TEXT_FORMIDENTIFIER":"<li>Formulier identificatie: %s<\/li>","PLG_CAPTCHA_OCHCAPTCHA_TEXT_FORMIDENTIFIERWILDCARD":"<li>Formulier identificatie: %s <i>(%s)<\/i><\/li>","PLG_CAPTCHA_OCHCAPTCHA_TEXT_GENERIC":"(Generiek)","PLG_CAPTCHA_OCHCAPTCHA_TEXT_MINIMUMTIME":"<li>Minimale tijd: %s<\/li>","PLG_CAPTCHA_OCHCAPTCHA_TEXT_NO":"Nee","PLG_CAPTCHA_OCHCAPTCHA_TEXT_YES":"Ja"}},"joomla.jtext":{"MDL_MODALTXT_CLOSE":"sluiten","MDL_MODALTXT_PREVIOUS":"vorige","MDL_MODALTXT_NEXT":"volgende","MOD_FINDER_SEARCH_VALUE":"Zoeken &hellip;","COM_FINDER_SEARCH_FORM_LIST_LABEL":"Zoekresultaten","JLIB_JS_AJAX_ERROR_OTHER":"Er is een fout opgetreden bij het ophalen van de JSON-gegevens: HTTP-statuscode %s.","JLIB_JS_AJAX_ERROR_PARSE":"Er is een parse fout opgetreden tijdens het verwerken van de volgende JSON-gegevens:<br><code style=\"color:inherit;white-space:pre-wrap;padding:0;margin:0;border:0;background:inherit;\">%s<\/code>","JLIB_FORM_CONTAINS_INVALID_FIELDS":"Het formulier kan niet worden verzonden omdat verplichte gegevens ontbreken. <br> Corrigeer de gemarkeerde velden en probeer het opnieuw.","JLIB_FORM_FIELD_REQUIRED_VALUE":"Vul dit veld in","JLIB_FORM_FIELD_REQUIRED_CHECK":"Een van de opties moet worden geselecteerd","JLIB_FORM_FIELD_INVALID_VALUE":"Deze waarde is niet geldig"},"finder-search":{"url":"\/index.php?option=com_finder&task=suggestions.suggest&format=json&tmpl=component&Itemid=101"},"system.paths":{"root":"","rootFull":"https:\/\/www.brotherlouis.nl\/","base":"","baseFull":"https:\/\/www.brotherlouis.nl\/"},"csrf.token":"659efe031f32916db1363e2b6fde49b8","system.keepalive":{"interval":840000,"uri":"\/index.php?option=com_ajax&amp;format=json"}}

Could it be that some rule in my .htacess for instance blocks a part of the extensions logic?

I have used the same extension in the past without any issues

Hi Louis,
just tested the contact form on your site, captcha loaded correct and i was able to post the contact form.
Did you change anything to make it work again?