Fixed reading layouts when they have an empty line at the end.

overcooked_simulator/overcooked_environment.py

@@ -403,6 +403,8 @@ class Environment:
 
         for line in lines:
             line = line.replace("\n", "").replace(" ", "")  # remove newline char
+            if line == "":
+                continue
             current_x: float = starting_at
             grid_line = []
             for character in line: