Fix ShapeError

✅ Solution

ShapeError in Polars arises when operations expect data of compatible shapes (row/column counts) but encounter mismatches, like attempting element-wise math between series of differing lengths or incompatible aggregations. To fix it, ensure input series have the expected dimensions by using `explode()`, `reshape()`, or aggregation functions like `groupby()` before the operation causing ShapeError. Verify the operation and input data shapes align with Polars' documented expectations for the function used.