I created a custom module which creates a content type (*FAQs*) with a paragraph field whose type is *FAQ Item* (with 2 fields, title and text). After installing the module, I have a new content type as expected. I add this new content type (which works), but when I want to add more paragraphs, I get this error. > [![error][1]][1] **edit start** > ↵An AJAX HTTP error occurred.↵HTTP Result Code: 200↵Debugging information follows.↵Path: /node/add/faq?ajax_form=1↵StatusText: OK↵ResponseText: <?php[{"command":"settings","settings":{"ajaxPageState":{"theme":"gin","theme_token":"FBIB6sjMcgI3SRTRYKUeCkAsw92FHcEaXOlFVwB2ngI","libraries":"admin_toolbar\/toolbar.tree,admin_toolbar_tools\/toolbar.icon,big_pipe\/big_pipe,claro\/global-styling,claro\/node-form,contextual\/drupal.contextual-links,contextual\/drupal.contextual-toolbar,core\/drupal.active-link,core\/drupal.autocomplete,core\/drupal.collapse,core\/drupal.date,core\/drupal.message,core\/drupal.states,core\/drupal.tabledrag,core\/drupal.tableresponsive,core\/normalize,devel\/devel-toolbar,gin\/gin,gin\/gin_accent,gin\/gin_classic_toolbar,gin\/gin_init,node\/drupal.node,paragraphs\/drupal.paragraphs.actions,paragraphs\/drupal.paragraphs.widget,path\/drupal.path,shortcut\/drupal.shortcut,toolbar\/toolbar,toolbar\/toolbar.escapeAdmin,tour\/tour,user\/drupal.user.icons"},"ajax":{"field-faq-item-faq-item-add-more--qjVoLJWqOj8":{"callback":["Drupal\\paragraphs\\Plugin\\Field\\FieldWidget\\ParagraphsWidget","addMoreAjax"],"wrapper":"field-faq-item-add-more-wrapper","effect":"fade","progress":{"type":"fullscreen"},"event":"mousedown","keypress":true,"prevent":"click","url":"\/node\/add\/faq?ajax_form=1\u0026_wrapper_format=drupal_ajax","dialogType":"ajax","submit":{"_triggering_element_name":"field_faq_item_faq_item_add_more","_triggering_element_value":"Add FAQ 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rel=\u0022stylesheet\u0022 media=\u0022all\u0022 href=\u0022\/sites\/default\/files\/css\/css_c_rE2XcWPmUHirqKm-RKFF_qynL8rJA8g-W8n4abiVo.css\u0022 \/\u003E\n"},{"command":"insert","method":"append","selector":"body","data":"\u003Cscript src=\u0022\/sites\/default\/files\/js\/js_3jVG9lzgjcFlKtvE_E57arfU7Hn1rx6ioB4oZjGpem4.js\u0022\u003E\u003C\/script\u003E\n","settings":null},{"command":"update_build_id","old":"form-N3cfG-UvfQ9d7-lyKH11XP19GRYkgZdu3m2gHPl5nZc","new":"form-lc7fp8-kj_PcGe8MQ13UMQ-iiW188ZB7fSqnr3GeVH4"},{"command":"insert","method":null,"selector":null,"data":"\u003Cdiv class=\u0022is-horizontal paragraphs-tabs-wrapper\u0022 id=\u0022field-faq-item-add-more-wrapper\u0022\u003E\u003Cul class=\u0022paragraphs-tabs tabs primary clearfix\u0022\u003E\u003Cli id=\u0022content\u0022 class=\u0022tabs__tab\u0022\u003E\u003Ca href=\u0022#field-faq-item-values\u0022\u003EContent\u003C\/a\u003E\u003C\/li\u003E\u003Cli id=\u0022behavior\u0022 class=\u0022tabs__tab\u0022\u003E\u003Ca href=\u0022#field-faq-item-values\u0022\u003EBehavior\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E \u003Cdiv data-drupal-selector=\u0022edit-field-faq-item\u0022 class=\u0022js-form-item form-item form-item--multiple\u0022\u003E\n \u003Cdiv class=\u0022layer-wrapper\u0022\u003E\n \u003Ctable id=\u0022field-faq-item-values--aSwvHj3qht8\u0022 class=\u0022field-multiple-table responsive-enabled draggable-table\u0022 data-striping=\u00221\u0022\u003E\n \n \n \u003Cthead\u003E\n \u003Ctr\u003E\n \u003Cth colspan=\u00222\u0022 class=\u0022field-label th__h4-classform-item__label-form-item__label--multiple-value-formfaq-item-h4\u0022\u003E\u003Ch4 class=\u0022form-item__label form-item__label--multiple-value-form\u0022\u003EFAQ Item\u003C\/h4\u003E\n\u003C\/th\u003E\n \u003Cth class=\u0022th__order\u0022\u003EOrder\u003C\/th\u003E\n \u003C\/tr\u003E\n \u003C\/thead\u003E\n \n \u003Ctbody\u003E\n \u003Ctr class=\u0022draggable paragraph-type--faq-item odd\u0022\u003E\n \n \n \n \u003Ctd class=\u0022field-multiple-drag tabledrag-cell tabledrag-cell--only-drag td__h4-classform-item__label-form-item__label--multiple-value-formfaq-item-h4\u0022\u003E\u003C\/td\u003E\n \n \n \n \u003Ctd class=\u0022td__order\u0022\u003E\u003Cdiv class=\u0022ajax-new-content\u0022\u003E\u003Cdiv id=\u0022field-faq-item-0-item-wrapper--TJ-6ELr1PXQ\u0022\u003E\u003Cdiv data-drupal-selector=\u0022edit-field-faq-item-0\u0022 id=\u0022edit-field-faq-item-0--tHifVZX8CJg\u0022 class=\u0022js-form-wrapper form-wrapper\u0022\u003E\u003Cdiv class=\u0022paragraph-top add-above-off js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-field-faq-item-0-top\u0022 id=\u0022edit-field-faq-item-0-top--MW5PwJH-PGo\u0022\u003E\u003Cdiv class=\u0022paragraph-type js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-field-faq-item-0-top-type\u0022 id=\u0022edit-field-faq-item-0-top-type--XM9izR4T3To\u0022\u003E\u003Cspan class=\u0022paragraph-type-label\u0022\u003EFAQ Item\u003C\/span\u003E\u003C\/div\u003E\n\u003Cdiv class=\u0022paragraph-info js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-field-faq-item-0-top-icons\u0022 id=\u0022edit-field-faq-item-0-top-icons--ELnpCd9G72o\u0022\u003E\u003C\/div\u003E\n\u003Cdiv class=\u0022paragraph-summary js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-field-faq-item-0-top-summary\u0022 id=\u0022edit-field-faq-item-0-top-summary--Zb9Qz1KXTOg\u0022\u003E\u003C\/div\u003E\n\u003Cdiv class=\u0022paragraphs-actions\u0022\u003E\n \u003Cinput class=\u0022paragraphs-icon-button paragraphs-icon-button-collapse button--extrasmall button js-form-submit form-submit button--small\u0022 title=\u0022Collapse\u0022 data-drupal-selector=\u0022field-faq-item-0-collapse-yucrtd5rndm\u0022 formnovalidate=\u0022formnovalidate\u0022 type=\u0022submit\u0022 id=\u0022field-faq-item-0-collapse--yUCRTd5RNDM\u0022 name=\u0022field_faq_item_0_collapse\u0022 value=\u0022Collapse\u0022 \/\u003E\n\n\n 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value=\u0022Duplicate\u0022 \/\u003E\n\n\n \u003C\/div\u003E\n \u003C\/div\u003E\n \u003C\/div\u003E\n\u003C\/div\u003E\n\u003Cdiv class=\u0022paragraphs-subform js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-field-faq-item-0-subform\u0022 id=\u0022edit-field-faq-item-0-subform--V7t1GU8rq2s\u0022\u003E\u003Cdiv class=\u0022field--type-string field--name-field-title field--widget-string-textfield paragraphs-content js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-field-faq-item-0-subform-field-title-wrapper\u0022 id=\u0022edit-field-faq-item-0-subform-field-title-wrapper--zJgUMDcs51c\u0022\u003E \u003Cdiv class=\u0022js-form-item form-item js-form-type-textfield form-type--textfield js-form-item-field-faq-item-0-subform-field-title-0-value form-item--field-faq-item-0-subform-field-title-0-value\u0022\u003E\n \u003Clabel for=\u0022edit-field-faq-item-0-subform-field-title-0-value--B04PQNbHYfs\u0022 class=\u0022form-item__label\u0022\u003ETitle\u003C\/label\u003E\n \u003Cinput class=\u0022js-text-full text-full form-text form-element form-element--type-text form-element--api-textfield\u0022 data-drupal-selector=\u0022edit-field-faq-item-0-subform-field-title-0-value\u0022 type=\u0022text\u0022 id=\u0022edit-field-faq-item-0-subform-field-title-0-value--B04PQNbHYfs\u0022 name=\u0022field_faq_item[0][subform][field_title][0][value]\u0022 value=\u0022\u0022 size=\u002260\u0022 maxlength=\u0022255\u0022 placeholder=\u0022\u0022\/\u003E\n \u003C\/div\u003E\n\n \u003C\/div\u003E\n\u003Cdiv class=\u0022field--type-string-long field--name-field-text field--widget-string-textarea paragraphs-content js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-field-faq-item-0-subform-field-text-wrapper\u0022 id=\u0022edit-field-faq-item-0-subform-field-text-wrapper--wwt5VTnDb3g\u0022\u003E \u003Cdiv class=\u0022js-form-item form-item js-form-type-textarea form-type--textarea js-form-item-field-faq-item-0-subform-field-text-0-value form-item--field-faq-item-0-subform-field-text-0-value\u0022\u003E\n \u003Clabel for=\u0022edit-field-faq-item-0-subform-field-text-0-value--2XyKSOBHMvo\u0022 class=\u0022form-item__label\u0022\u003EText\u003C\/label\u003E\n \u003Cdiv class=\u0022form-textarea-wrapper\u0022\u003E\n \u003Ctextarea class=\u0022js-text-full text-full form-textarea resize-vertical form-element form-element--type-textarea form-element--api-textarea\u0022 data-drupal-selector=\u0022edit-field-faq-item-0-subform-field-text-0-value\u0022 id=\u0022edit-field-faq-item-0-subform-field-text-0-value--2XyKSOBHMvo\u0022 name=\u0022field_faq_item[0][subform][field_text][0][value]\u0022 rows=\u00225\u0022 cols=\u002260\u0022 placeholder=\u0022\u0022\u003E\u003C\/textarea\u003E\n\u003C\/div\u003E\n\n \u003C\/div\u003E\n\n \u003C\/div\u003E\n\u003C\/div\u003E\n\u003C\/div\u003E\n\u003C\/div\u003E\u003C\/div\u003E\u003C\/td\u003E\n \n \n \n \u003Ctd 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\u003C\/table\u003E\n\u003C\/div\u003E\n\n \u003Cdiv class=\u0022form-actions\u0022\u003E\u003Cdiv class=\u0022paragraphs-dropbutton-wrapper paragraphs-add-wrapper button--small js-form-wrapper form-wrapper\u0022 data-drupal-selector=\u0022edit-field-faq-item-add-more\u0022 id=\u0022edit-field-faq-item-add-more--YxkFvZNWbAE\u0022\u003E\u003Cinput class=\u0022field-add-more-submit button js-form-submit form-submit button--small\u0022 data-drupal-selector=\u0022field-faq-item-faq-item-add-more-qjvoljwqoj8\u0022 formnovalidate=\u0022formnovalidate\u0022 type=\u0022submit\u0022 id=\u0022field-faq-item-faq-item-add-more--qjVoLJWqOj8\u0022 name=\u0022field_faq_item_faq_item_add_more\u0022 value=\u0022Add FAQ Item\u0022 \/\u003E\n\n\u003C\/div\u003E\nto \u003Cem class=\u0022placeholder\u0022\u003EFAQ Item\u003C\/em\u003E\u003C\/div\u003E\n \u003C\/div\u003E\n\u003C\/div\u003E","settings":null}] **edit end** Is there any missing configuration the module should provide? The YAML files are inside faq/config/optional. They have been created from the UI on another site and exported. [1]: https://i.sstatic.net/pVSk1.png