Hi everyone,

I'm performing the Geometry Optimization on the slab model of 5 layers of PVDF with a 10A of vaccum layer. The model was shown in the attached file.

DFT-D with LDA was used and Band strucrue and Density of states were checked.

During the calculation, I encounted the error, and couldn't figure out what caused it.

The error message was also attached.

I'm glad if someone helps about this problem.

Thanks.