Missing samples in repeated measures

I have a project where I am analyzing fecal metabolomics from animals. I have repeated samples (7 time points) from two treatment groups. Some of the animals did not produce feces at all time points. Is it possible to analyze this data set including all individuals, including those that have individuals with missing at random (MAR) samples?

I am getting error messages when I try to input this data in metabolanlyst with a metadata table.