Ok I'm able to reproduce on an iPhone XR running iOS 18.2, and I see some logs printed before the crash:
Invalid layer: Tensor dimensions N1D1C1H1W43844 are not within supported range, N[1-4096]D[1-1]C[1-65536]H[1-16384]W[1-16384].
Invalid layer: Tensor dimensions N1D1C1H1W43844 are not within supported range, N[1-4096]D[1-1]C[1-65536]H[1-16384]W[1-16384].
Invalid layer: Tensor dimensions N1D1C1H1W21922 are not within supported range, N[1-4096]D[1-1]C[1-65536]H[1-16384]W[1-16384].
Invalid layer: Tensor dimensions N1D1C1H1W21922 are not within supported range, N[1-4096]D[1-1]C[1-65536]H[1-16384]W[1-16384].
Invalid layer: Invalid input tensor channel 1 and format size 2 bytes, must be aligned on 64 bytes
Invalid layer: Invalid input tensor channel 1 and format size 2 bytes, must be aligned on 64 bytes
Invalid layer: Invalid input tensor channel 1 and format size 2 bytes, must be aligned on 64 bytes
Invalid layer: Invalid input tensor channel 1 and format size 2 bytes, must be aligned on 64 bytes
The input shape of the model is 1x43844x1. Model loads fine on an iPhone 15 Pro. Does iPhone XR not support this input shape?