Cannot read properties of undefined (reading ‘map’) on OpenAI chat model

[Emanuel_Maricic]

Hey guys, for some reason I just started getting this error on my AI agents
{
“errorMessage”: “Cannot read properties of undefined (reading ‘map’)”,
“errorDetails”: {},
“n8nDetails”: {
“time”: “10/3/2025, 12:23:56 PM”,
“n8nVersion”: “1.108.2 (Self Hosted)”,
“binaryDataMode”: “default”
}
}

Any idea how to solve it?

[Wouter_Nigrini]

Can you share your entire workflow in a code block. What do you have in your system message and if you have a simple memory attached, disable that for now and see if the same error happens