BUG: EPiServer.Forms 5.8.2. Jquery error prevents forms from bein

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BUG: EPiServer.Forms 5.8.2. Jquery error prevents forms from being submitted

Alexander Wagner

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I've just upgraded from EpiServer.Forms 5.8.0 to EpiServer.Forms 5.8.2 and now I get this error message when trying to submit a form.

jquery-3.5.1.min.js:2 jQuery.Deferred exception: Cannot read properties of undefined (reading 'RequestVerification') TypeError: Cannot read properties of undefined (reading 'RequestVerification')
    at Object.getAntiForgeryToken (https://local.bravida.se/Util/EPiServer.Forms/EPiServerForms.js:866:80)
    at Object.buildSubmitRequestHeader (https://local.bravida.se/Util/EPiServer.Forms/EPiServerForms.js:875:37)
    at _doSubmitForm (https://local.bravida.se/Util/EPiServer.Forms/EPiServerForms.js:2162:44)
    at https://local.bravida.se/Util/EPiServer.Forms/EPiServerForms.js:1944:25
    at e (https://local.bravida.se/Util/EPiServer.Forms/jquery-3.5.1.min.js:2:30005)
    at t (https://local.bravida.se/Util/EPiServer.Forms/jquery-3.5.1.min.js:2:30307) undefined

These are the form packages that my project is using and I've upgraded each one by one to test which one is the culprit and after upgrading Episerver.Forms to 5.8.2 this error occurs (after upgrading both .Core and .Ui to 5.8.2). On 5.8.0 it works as expected.

<PackageReference Include="EPiServer.Forms" Version="5.8.2" />
<PackageReference Include="EPiServer.Forms.Core" Version="5.8.2" />
<PackageReference Include="EPiServer.Forms.Samples" Version="4.2.2" />
<PackageReference Include="EPiServer.Forms.UI" Version="5.8.2" />

#322598

May 24, 2024 6:53

Antti Sihvola

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Have you by any chance overriden FormContainerInitScript.cshtml file by placing it in your project ? The package adds some antiforgery stuff in the file (epi.EPiServer.SystemSettings at the bottom) you might be missing after the upgrade. Adding that section manually should fix the issue

#322726

May 27, 2024 12:43

- Jul 03, 2024 5:24

Just what I ran into, thanks!

Leonard Pera - May 05, 2025 13:37

Can you give more details on what exactly should be added in the overriden FormContainerInitScript in order for it to work? I don't find any info about what epi.EPiServer.SystemSettings should contain. Thanks!

Alexander Wagner

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Oooh, yeah I have and since it was a minor update I didn't think about checking for new updated views.

#322824

May 29, 2024 11:00

Eric Zeggelaar

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You might get the console warning, not error, as shown below. You will see it when the form is valid and you try to submit it. Then check you FormContainerInitScript as well.

epi.EPiServer.SystemSettings is undefined

#327862

Edited, Aug 22, 2024 8:38

error This topic was created over six months ago and has been resolved. If you have a similar question, please create a new topic and refer to this one.