Kilotest: Diagnoses of link element invalid violation by HTML element 1380 on Prometheus page

Here is how tools diagnose the link element invalid issue for HTML element 1380 of the Prometheus page.

Basics

• About the link element invalid issue
  • Why it matters: Document fails to get a needed external resource
  • Priority: highest
  • Related WCAG standard: 1.3.1
• About the Prometheus page
  • URL: https://www.joinprometheus.org/
  • Tested on 2026-04-07 at 19:19
• About HTML element 1380
  • Tag name: LINK
  • Text: Employers & Educators … All rights reserved.
  • Start tag: <link href="https://siteassets.parastorage.com/pages/pages/thunderbolt?appDefinitionIdToSiteRevision=%7B%22333b456e-dd48-4d6b-b32b-9fd48d74e163%22%3A%221118%22%2C%2214271d6f-ba62-d045-549b-ab972ae1f70e%22%3A%2225%22%2C%2214bcded7-0066-7c35-14d7-466cb3f09103%22%3A%221335%22%2C%2249a4ef91-9d6e-43ff-94de-88cb5481cdf5%22%3A%221684%22%2C%22b976560c-3122-4351-878f-453f337b7245%22%3A%221291%22%7D&amp;appDefinitionIdsWithCustomCss=%5B%2249a4ef91-9d6e-43ff-94de-88cb5481cdf5%22%5D&amp;beckyExperiments=.DatePickerPortal%2C.EnableCustomCSSVarsForLoginSocialBar%2C.FreemiumBannerOdeditor%2C.LoginBarEnableLoggingInStateInSSR%2C.TextInputAutoFillFix%2C.UseLoginSocialBarCustomMenu%2C.UseNewLoginBarDropdownMenuAlignment%2C.UseNewLoginSocialBarCustomMenuPositioning%2C.UseNewLoginSocialBarElementStructure%2C.UseNewLoginSocialBarMemberInitialsAvatar%2C.WixFreeSiteBannerDesktop%2C.WixFreeSiteBannerMobile%2C.addIdAsClassName%2C.buttonUdp%2C.calculateCollapsibleTextLineHeightByFont%2C.disableBuilderWixComponents%2C.dynamicSlots%2C.fiveGridLineStudioSkins%2C.isClassNameToRootEnabled%2C.migrateRepeaterUiTypeMapper%2C.svgResolver_2%2C.uiTypeNativeMappers%2C.updateRichTextSemanticClassNamesOnCorvid%2C.useClassnameInResponsiveAppWidget%2C.useImageAvifFormatInNativeProGallery%2C.useWowImageInFastGallery&amp;blocksBuilderManifestGeneratorVersion=1.129.0&amp;contentType=application%2Fjson&amp;dfCk=6&amp;dfVersion=1.5326.0&amp;editorName=Unknown&amp;experiments=dm_bgScrubToMotionFixer%2Cdm_masterPageVariablesQueryFixer%2Cdm_migrateOldHoverBoxToNewFixer&amp;externalBaseUrl=https%3A%2F%2Fwww.joinprometheus.org&amp;fileId=b30889c7.bundle.min&amp;formFactor=desktop&amp;hasTPAWorkerOnSite=false&amp;hasUserDomainMedia=false&amp;isBuilderComponentModel=false&amp;isHttps=true&amp;isInSeo=false&amp;isPremiumDomain=true&amp;isUrlMigrated=true&amp;isWixCodeOnPage=false&amp;isWixCodeOnSite=false&amp;language=en&amp;metaSiteId=37e73cec-b342-45ca-bae1-6c517cb9e95a&amp;module=thunderbolt-platform&amp;originalLanguage=en&amp;pageId=82767f_ebe3b5f09451b5be41beef75a6e8cf6b_1181.json&amp;pilerExperiments=specs.piler.useEditorReactComponents&amp;quickActionsMenuEnabled=false&amp;registryLibrariesTopology=%5B%7B%22artifactId%22%3A%22editor-elements%22%2C%22namespace%22%3A%22wixui%22%2C%22url%22%3A%22https%3A%2F%2Fstatic.parastorage.com%2Fservices%2Feditor-elements%2F1.15034.0%22%7D%2C%7B%22artifactId%22%3A%22editor-elements%22%2C%22namespace%22%3A%22dsgnsys%22%2C%22url%22%3A%22https%3A%2F%2Fstatic.parastorage.com%2Fservices%2Feditor-elements%2F1.15034.0%22%7D%5D&amp;remoteWidgetStructureBuilderVersion=1.251.0&amp;siteId=3d6173e7-6efd-49d3-888e-52b17f486163&amp;siteRevision=1185&amp;staticHTMLComponentUrl=https%3A%2F%2Fwww-joinprometheus-org.filesusr.com%2F&amp;viewMode=desktop" id="platform_ffr7x" as="fetch" position="post-scripts" rel="preload" crossorigin="anonymous">
  • XPath: /html/body/link[4]
  • Bounding box: x = 0, y = 0, width = 0, height = 0

Diagnoses

1. Link elements can only be located in the head section of the document.

   Tool: HTML CodeSniffer (Squiz Labs)

   Rule: E-WCAG2AAA.Principle2.Guideline2_4.2_4_8.H59.1