Sure! Here is a possible solution to the error described:

The Back section-M7027-start secondary positioning platform has materials.

Machine code: KM-ASSYH2-04

Error id: 188

To resolve this error, you
The error message "Back section-M7027-start secondary positioning platform has materials, please take it out?" indicates that there is a problem with a specific object or device related to the secondary positioning platform in a manufacturing process.