add exception handling

ai_commands.py

@@ -2,6 +2,7 @@
 import logging
 import re
 import sys
+import random
 from datetime import datetime
 from enum import Enum
 from typing import Optional
@@ -373,8 +374,15 @@ class Events(commands.Cog):
                     while (Path(temp_file_name)).exists():
                         temp_file_name = GRAPHICS_PATH + message.content + str(num) +  ".png"
                         num += 1
+                    try:
                        with open(temp_file_name, "wb") as dalle_file:
                            dalle_file.write(response.content)
+                    except OsError:
+                       temp_file_name = "oserror.png"
+                       with open(temp_file_name, "wb") as dalle_file:
+                           dalle_file.write(response.content)
+
+
                     self.logger.info("Koniec procedury obrazkowej.")
                     fnord = discord.File(
                         temp_file_name, spoiler=False, description=message.content