lineXtester analysis

General
1

Hy

I am running lineXtester analysis.

my input code is:

library(agricolae)
output2<-with(final,lineXtester(replication, female, male, height))

I got this error code:

ANALYSIS LINE x TESTER: height

output2<-with(final,lineXtester(replication, female, male, height))

ANALYSIS LINE x TESTER: height
Error in contrasts<-(*tmp*, value = contr.funs[1 + isOF[nn]]) :
contrasts can be applied only to factors with 2 or more levels

I will appreciate any advice on how to handle it urgently.

Thank you all

2

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