I preparing a geometric morphometric work on an isopod species in Egypt. the procrustes ANOVA results give 00000 values with one of the parameters (i.e. sex). The article deals with shape changes in two populations. in the analysis, the population is the main effect (Extra 1), sex (Extra 2) and individuals is the random effect. I get the SS and MS for sex 00000. So, what is the problem? I need help in this point.

Thanks in advance

the results are:

Centroid size:

Effect SS MS df F P (param.)

Population 1795651.412017 359130.282403 5 7.46