DeSeq2_tool error_ choosing factor levels +fitting model


I did DeSeq2 on feacturCounts file of my RNA-seq data. The job was executed however the ’ i ’ icon mentioned the following standard tool error.

Can someone please let me know what that means?

The parameters I used for DeSeq2 is below.
Factor 1: Treatment
Factor level1: CONTROL
Factor level 2: Drug 1
Factor level 3 : Drug 3

Many thanks for your help!