Gracefully handle channel not found errors

jarvis_tasks/tasks/reddit.py

@@ -9,6 +9,7 @@ from asyncpraw.models.reddit.submission import Submission
 from asyncpraw.models.reddit.submission import Subreddit as Sub
 from asyncprawcore.exceptions import Forbidden, NotFound
 from dis_snek import Snake
+from dis_snek.client.errors import NotFound as DNotFound
 from dis_snek.models.discord.embed import Embed
 from jarvis_core.db import q
 from jarvis_core.db.models import Subreddit, SubredditFollow
@@ -129,6 +130,10 @@ async def _stream(sub: Sub, bot: Snake) -> None:
                     f"`r/{sub.display_name}` was posted to at <t:{timestamp}:f>",
                     embeds=embeds,
                 )
+            except DNotFound:
+                logger.warning(f"Follow {follow.id}'s channel no longer exists, deleting")
+                follows_to_delete.append(follow)
+                continue
             except Exception:
                 logger.error(
                     f"Failed to send message to {channel.id} in {channel.guild.name}", exc_info=True

jarvis_tasks/tasks/twitter.py

@@ -5,6 +5,7 @@ from typing import List
 
 import tweepy.asynchronous
 from dis_snek import Snake
+from dis_snek.client.errors import NotFound
 from dis_snek.models.discord.embed import Embed
 from jarvis_core.db import q
 from jarvis_core.db.models import TwitterAccount, TwitterFollow
@@ -135,6 +136,11 @@ class JARVISTwitterStream(AsyncStream):
                     f"`@{status.user.screen_name}` {mod}tweeted this at <t:{timestamp}:f>",
                     embeds=embeds,
                 )
+            except NotFound:
+                logger.warn(f"Follow {follow.id} invalid, deleting")
+                await follow.delete()
+                num_follows -= 1
+                continue
             except Exception:
                 logger.debug(f"Failed to send message to {channel.id} in {channel.guild.name}")