### Describe the issue: At [this line](https://github.com/pymc-devs/pymc/blob/main/pymc/distributions/multivariate.py#L342), ``` logp = -0.5 * (k * pt.log(2 * np.pi) + quadratic_form) + logdet ``` should be ``` logp = -0.5 * (k * pt.log(2 * np.pi) + quadratic_form + logdet) ``` ### Reproduceable code example: ```python N/A ``` ### Error message: ```shell ``` ### PyMC version information: 5.21.1 ### Context for the issue: _No response_