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.
![](https://uploads-us-west-2.insided.com/zapier-ca/attachment/9f37a593-a53c-438f-a2ee-62fd235e6cf9.png)
I noticed that in the Data in, it shows the ‘email content’ as “no data to show for this record”.
![](https://uploads-us-west-2.insided.com/zapier-ca/attachment/cb0cf87e-52d3-4a3d-96c2-741ed369e360.png)
However, there absolutely IS data in the field ‘email content’. It’s the html of the template campaign I set up.
![](https://uploads-us-west-2.insided.com/zapier-ca/attachment/a57e25e4-369b-4d00-aa09-94650069bbf0.png)
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.
![](https://uploads-us-west-2.insided.com/zapier-ca/attachment/e961114b-fd65-4b0e-a270-b2e4aa26dac4.png)
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?