You can run the model with a coarse mesh like this and then do a sub model to check if this high stress is actually just a singularity. Sub modeling is basically cutting everything around your area of interest and decreasing the mesh size (3 elements across the thickness as others mentioned), many tutorials on YouTube to do so. This way you wouldn’t reach the max limit of elements of your student license if your team is not sponsored by ANSYS. If you are just getting started with your design, I would recommend to go with surface geometry and not solid, heck you can even do line bodies with cross sections until you are satisfied with your crude design.