Metaboanalyst Heatmap error - use only group average

Hi,
I encoutered an error when using Metaboanalyst to generate a heatmap.
I have LC-MS contentration table with two groups, 3 replicates each. A heatmap was generated and everything looks good until I chose to use only group average. The heatmap changed to four blocks.
Has anyone had this experience before?
Thanks,

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