Description
The spatial reference associated with the input feature class and the output coordinate system appear to be different. This could lead to unexpected results. This error could also indicate that the spatial weights matrix file used does not match the spatial reference for the input feature class. Spatial weights matrix files are tied to the input feature class, the Unique ID field, and the output coordinate system settings used when the .swm file was created.
Solution
To avoid confusion and to ensure accurate results, consider projecting your input feature class to match the output coordinate system settings and re-creating the spatial weights matrix file prior to running your analysis.