Fix TypeError

✅ Solution

This error usually arises when JAX's automatic differentiation (autodiff) encounters a `ShapedArray` unexpectedly during the backward pass of a `fori_loop`, often triggered by operations incompatible with sharded arrays within the loop. Resolve this by explicitly materializing the `ShapedArray` into a concrete array using `jax.device_put` or `jax.block_until_ready` before its used in an operation that triggers the error, or restructuring the calculation to avoid the incompatible operation within the loop's backward pass. Review the sharding annotations to ensure data is properly distributed and materialized when needed.