A Levene's test is essentially like a t-test but instead of comparing means it's comparing variances.
If the test is significant, the homogeneity variance assumption is violated but we have a significant difference in variances. It's an effect.
ie adjusting the degrees of freedom and the p value.
The goal of this procedure is to protect ourselves against this increased probability of type one error that's often associated with violations of homogeneity variance.