Fix LinAlgError

✅ Solution

LinAlgError in scikit-learn often arises from singular matrices during calculations like matrix inversion, often within algorithms involving covariance matrices. Resolve this by adding regularization (e.g., `reg_param` in `QuadraticDiscriminantAnalysis` or a small value to the diagonal in covariance calculations) to improve matrix conditioning and ensure invertibility. Alternatively, check for and remove highly correlated features in your data which can also cause singularity.