Long effects on simulation

GROMACS version: 2023
GROMACS modification: No
I am new to GROMACS and have been following the lysozyme in water tutorial (Lysozyme in Water). When I mdrun after making all the necessary files and run the output .gro file with the .xtc file in Pymol the waters create lines across, forming a lattice throughout. How do I solve this? It looks like this: Long effects in GROMACS - Album on Imgur
Thanks in advance.

This is a periodicity effect. Fix it with trjconv as described in the tutorial: Lysozyme in Water