Fixed AI validation.

servermanager.py

@@ -58,7 +58,7 @@ def server_command_builder(
         tuple[int, int]
     ] = [],  # list of nations that will be ai tuple format: NationID, AI Level (1-6), 0 being closed
     client_start: bool = True,
-    teams: list[tuple[int, int, int]] = [],
+    teams: list[tuple[int, int, int]] = [],  # list of teams with format nation id,
     clustered_start: bool = False,
     team_game: bool = False,
     mapfile: str = "",
@@ -100,7 +100,7 @@ def server_command_builder(
     if not (0 < era < 4):
         return "ERROR_ERA"
 
-    ai_indexes = [t[1] for t in ai_slots]
+    ai_indexes = [t[0] for t in ai_slots]
     if not (len(ai_indexes) == len(set(ai_indexes))):
         return "ERROR_AIS"