Changed importing method for plot_atoms

app.py

@@ -6,7 +6,7 @@ import ase
 from ase.build import molecule # Often used, good to have for exec scope if needed
 from ase.calculators.emt import EMT # Common default
 from ase.optimize import BFGS # Common optimizer
-from ase.visualize import plot_atoms
+from ase.visualize.plot import plot_atoms
 import matplotlib
 matplotlib.use('Agg') # Use Agg backend for non-interactive plotting
 import matplotlib.pyplot as plt