JCInventory, Grid based jigsaw Inventory for your projects

Wondering if someone could help me out

Followed the tutorial for adding the inventory to a custom pawn class, however cannot see the inventory when opened:
5c93b366dd42735baae1dcba3bdeee562e20c33e.jpeg

PIE:Error: Error Accessed None ‘PlayerInventory’ from node Get Equiptment Item Data by Index in graph ‘OnMouseMove’ in blueprint JCPlayerEquiptSlot
PIE:Error: Error Accessed None ‘PlayerInventory’ from node Branch in graph ‘OnMouseMove’ in blueprint JCPlayerEquiptSlot

Using 4.8.3

Thanks