Fix error occurring for guilds/users without icons

Referencing #15

CHANGELOG.md

@@ -10,6 +10,9 @@
   * `DiscordLevelingSystem.version_info()`
 * Parameter `path` is now optional in method `DiscordLevelingSystem.create_database_file()`. If left as `None`, the database file is created in the current working directory.
 
+#### Bug Fixes
+* Fixed an issue where an error would occur when a user/guild doesn't have an icon. Now, the icon is the default discord user icon ([#5](https://github.com/Defxult/discordLevelingSystem/issues/15)). 
+
 <!-- </details> -->
 
 ## v1.1.0 » Jan. 29, 2022

discordLevelingSystem/announcement.py

@@ -175,12 +175,13 @@ def _convert_member_markdown(self, to_convert: str, message_author: DMember) ->
                     Added `discord.Member.display_avatar.url`
                     Added `discord.Member.banner.url`
         """
+        DEFAULT_URL = message_author.default_avatar.url
         markdowns = {
             # member
-            AnnouncementMember.avatar_url : message_author.avatar.url, # type: ignore / Possible `url` is `None` but that's ok
-            AnnouncementMember.banner_url : message_author.banner.url if message_author.banner is not None else None,
+            AnnouncementMember.avatar_url : message_author.avatar.url if message_author.avatar is not None else DEFAULT_URL,
+            AnnouncementMember.banner_url : message_author.banner.url if message_author.banner is not None else DEFAULT_URL,
             AnnouncementMember.created_at : message_author.created_at,
-            AnnouncementMember.default_avatar_url : message_author.default_avatar.url,
+            AnnouncementMember.default_avatar_url : DEFAULT_URL,
             AnnouncementMember.discriminator : message_author.discriminator,
             AnnouncementMember.display_avatar_url : message_author.display_avatar.url,
             AnnouncementMember.display_name : message_author.display_name,
@@ -191,7 +192,7 @@ def _convert_member_markdown(self, to_convert: str, message_author: DMember) ->
             AnnouncementMember.nick : message_author.nick,
 
             # guild
-            AnnouncementMember.Guild.icon_url : message_author.guild.icon.url, # type: ignore / Possible `url` is `None` but that's ok
+            AnnouncementMember.Guild.icon_url : message_author.guild.icon.url if message_author.guild.icon is not None else DEFAULT_URL,
             AnnouncementMember.Guild.id : message_author.guild.id,
             AnnouncementMember.Guild.name : message_author.guild.name
         }