[Python] pyo3 multiple `wrap` found

I am trying to return a HashMap<String, Vec<Vec<f64>>> from Rust to Python.

This is the function in PyO3 wrapper:

pub fn predict_intervals<'py>(
&self,
py: Python<'py>,
flat_data: PyReadonlyArray1<f64>,
rows: usize,
cols: usize,
parallel: Option<bool>,
) -> PyResult<Bound<'py, PyDict<String, PyArray2<f64>>>> {
let flat_data = flat_data.as_slice()?;
let data = Matrix::new(flat_data, rows, cols);
let parallel = parallel.unwrap_or(true);

let predictions: HashMap<String, Vec<Vec<f64>>> = self.booster.predict_intervals(&data, parallel); // Result<YourPredictionType, YourErrorType>

let py_dict: PyDict<String, PyArray2<f64>> = PyDict::new(py);
for (key, value) in predictions?.iter() {
let py_array: PyArray2<f64> = PyArray2::from_array(py, value); // Convert each value to PyArray2
py_dict.set_item(key, py_array)?; // Add to the dictionary
}

Ok(py_dict.into_py_dict_bound(py))
}


But, I keep getting the following error:

error[E0034]: multiple applicable items in scope
--> src\booster.rs:312:10
|
312 | ) -> PyResult<Bound<'py, PyDict<String, PyArray2<f64>>>> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ multiple `wrap` found
|
= note: candidate #1 is defined in an impl for the type `IntoPyConverter<Result<T, E>>`
= note: candidate #2 is defined in an impl for the type `IntoPyConverter<T>`
= note: candidate #3 is defined in an impl for the type `IntoPyObjectConverter<Result<T, E>>`
= note: candidate #4 is defined in an impl for the type `IntoPyObjectConverter<T>`
= note: and 2 others


How can I solve this problem?

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