# Can't issue certificates containing displayHtml

**URL:** https://community.blockcerts.org/t/cant-issue-certificates-containing-displayhtml/1016
**Category:** Support
**Created:** [May 7, 2018, 8:25am UTC](https://community.blockcerts.org/t/cant-issue-certificates-containing-displayhtml/1016 "2018-05-07T08:25:42Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![sandoche](https://sea2.discourse-cdn.com/flex016/user_avatar/community.blockcerts.org/sandoche/32/326_2.png) [@sandoche](https://community.blockcerts.org/u/sandoche)
#### Post date: [May 7, 2018, 8:25am UTC](https://community.blockcerts.org/t/cant-issue-certificates-containing-displayhtml/1016/1 "2018-05-07T08:25:42Z")

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Hi,

I can’t issue certificates that contains the displayHtml attribute.  
I get this error when trying to sign a certificate containing this field:

```auto
WARNING - Caught exception trying provider <bound method BlockrIOBroadcaster.broadcast_tx of <cert_issuer.bitcoin.connectors.BlockrIOBroadcaster object at 0x7fbecc918e80>>. Trying another. Exception=Expecting value: line 1 column 1 (char 0)

```

I opened an issue here: [https://github.com/blockchain-certificates/cert-issuer/issues/85](https://github.com/blockchain-certificates/cert-issuer/issues/85)

Best regards,

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<div class="post-metadata">

### Author: ![sandoche](https://sea2.discourse-cdn.com/flex016/user_avatar/community.blockcerts.org/sandoche/32/326_2.png) [@sandoche](https://community.blockcerts.org/u/sandoche)
#### Post date: [May 8, 2018, 1:23pm UTC](https://community.blockcerts.org/t/cant-issue-certificates-containing-displayhtml/1016/2 "2018-05-08T13:23:13Z")

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I didn’t fix this warning, but at least I manage to make it work and generate a valid certificate, by adding displayHtml to @context, cf this PR: [https://github.com/blockchain-certificates/cert-tools/pull/27](https://github.com/blockchain-certificates/cert-tools/pull/27)

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### Author: ![gcervera](https://avatars.discourse-cdn.com/v4/letter/g/46a35a/32.png) [@gcervera](https://community.blockcerts.org/u/gcervera)
#### Post date: [July 4, 2019, 8:14pm UTC](https://community.blockcerts.org/t/cant-issue-certificates-containing-displayhtml/1016/3 "2019-07-04T20:14:19Z")

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Hi did you manage to add the receipent’s name to each generated certificate? I’m trying to add the Name embeded into the HTML code but is not working. Any thoughs?