**Problem :**

I have the dataset consisting of the following: one column `language`

containing five different languages. Two of the other columns `Canonicity`

and `Intrinsic`

containing either (0, 1). One last column is `useOfIntrinsic`

. I would like to test a use of intrinsic as the function of `Language`

, `Canonicity`

and `useOfIntrinsic`

. Thus, I ran a following mixed-effect logistic regression model:

`glmer(INT ~ Language * Canonicity + Language + Canonicity + useOfIntrinsic +(1|Picture) + (1|ID), data = data, family = "binomial")`

I also tried as below:

`glmer(INT ~ Language + Canonicity + useOfIntrinsic:Language + Canonicity:CAN + useOfIntrinsic + (1|Picture) + (1|ID), data = data, family = "binomial")`

But, I get below error:

**“Fixed-effect model matrix is rank deficient so dropping 1 column / coefficient”**

** **Any solution on my error?