Hey guys, I’m trying to set up my first zap between LegitFit and MailerLite but I’m getting the following error code from the LegitFit side:
Error code: Error while retrieving: The app returned "Cannot read properties of undefined (reading '_id')".
Can someone please advise on how to rectify and solve this.
Many thanks,
Barry
Question
LegitFit error: Error while retrieving: The app returned "Cannot read properties of undefined (reading '_id')"
This post has been closed for comments. Please create a new post if you need help or have a question about this topic.
+14- Zapier Orchestrator & Solution Partner
Hi
Try reaching out to LegitFit Support for help troubleshooting their Zap app integration.
+6- Zapier Staff
Hi
Welcome to the Community.
We acknowledge the error in the integration between LegitFit and MailerLite, where the Zap is trying to access a missing '_id' field. To resolve this, users should verify the trigger setup, review data fields, and ensure LegitFit sends the correct information. Testing with sample data can help identify inconsistencies. If issues persist, contacting LegitFit is recommended for further troubleshooting.
ZapConnect 2026 is coming
Join us September 23rd, 2026 for a free, one-day virtual event with 30+ sessions on AI automation. Get live build-alongs, playbooks, and strategies to lead AI transformation at your organization.
Log in to the Community
No account yet? Create an account
Use your Zapier credentials
Log in with ZapierEnter your E-mail address. We'll send you an e-mail with instructions to reset your password.