Skip to main content

Get Support
Have a question? Let's get you an answer!

How Do I...? Troubleshooting Code & Webhooks Developer Zone

Other Help Resources
Wait, there's more! Check out these Community sourced spaces for additional resources.

Zapier Help Center Hire an Expert

Learning Resources
All of our best learning resources can be found here.

Featured Articles Show & Tell Zapier's products AI Hub Zapier Tools Hub

Share your knowledge
Give back to the Community by sharing your automation wins and helping to answer questions.

Share your success See unanswered questions User Groups

Other Learning Resources
Some of our favorite additional ways to upskill your Zapier knowledge.

Zapier Learn Zapier Blog Zapier Webinars

Product Updates
Check out what is new and upcoming with Zapier with our regular product updates.

Product Updates

Early Access Program
Want to join Early Access? Learn more here.

  • Home
  • Get Help
  • Troubleshooting
  • Error “Cannot read properties of undefined (reading ‘length’)” when trying to create a draft campaign in Mailerlite
Question

Error “Cannot read properties of undefined (reading ‘length’)” when trying to create a draft campaign in Mailerlite

Sigurdur130
Forum|alt.badge.img+1

I’m trying to create a draft campaign in Mailerlite. I get the error code “Cannot read properties of undefined (reading ‘length’)”. Here’s a screenshot.

 

 

I noticed that in the Data in, it shows the ‘email content’ as “no data to show for this record”.

 

 

However, there absolutely IS data in the field ‘email content’. It’s the html of the template campaign I set up.

 

 

After some fiddling, I suspect that it has to do with the length of the html. I could get it to work with shorter strings.

 

 

It also works with just a portion of the html, though I didn’t dive into counting the exact character number where it starts to break.

 

So now I’m stuck. I can’t shorten the html for the campaign (or if I can, I don’t know how to: zero coding knowledge).

 

Any insight?

Did this topic help you find an answer to your question?
100% found this helpful

4 replies

Troy Tessalone
Forum|alt.badge.img+14

Hi @Sigurdur130 

Try just including the HTML from between these tags:

<body></body>

 

 

⚡ Troy Tessalone - AutomationAce.com | Premier Certified Zapier Expert | #1 Zapier Community Contributor
Sigurdur130
Forum|alt.badge.img+1
  • Sigurdur130Beginner
  • Author
  • Beginner
  • 28 replies
  • June 7, 2024

Hey @Troy Tessalone, I gave it a try, same error messages. No data to show for this record.

 

However, I only found an exact match for the </body> tag, not the <body> one. Closest I could find was 

<body class="font-sans antialiased bg-white dark:bg-gray-800 overflow-hidden">. I started from there, though.
 

 

Troy Tessalone
Forum|alt.badge.img+14

@Sigurdur130 

Looks like the HTML has a bunch of extra HTML that can probably be removed. e.g. <scripts>

I’d recommend simplifying the HTML as much as possible.

 

Otherwise, you may want to try reaching out to MailerLite Support for help with their Zap app and underlying API endpoint.

https://developers.mailerlite.com/docs/campaigns.html#create-a-campaign

 

 

⚡ Troy Tessalone - AutomationAce.com | Premier Certified Zapier Expert | #1 Zapier Community Contributor
Sigurdur130
Forum|alt.badge.img+1
  • Sigurdur130Beginner
  • Author
  • Beginner
  • 28 replies
  • June 8, 2024

Your post showed me another problem that kind of obviates anything else. In the developer docs they note that the account must be on the advanced plan. I’m on the growing business plan. This isn’t specified in the Zap, so I had no clue.

I guess I can safely throw in the towel on this. Thanks for trying to help, @Troy Tessalone =)

Reply


Terms & Conditions