Issue Updating mod makes the game load longer when changing day

Fixing link: https://smapi.io/log/e4a6dc1843ee4666b0ea37400faad7f5
Thanks for the log.

In terms of slowness; it's likely from SDV Expanded & Ridgeside Village; as they're pretty, big modpacks. And, as you progress more, and more data is added into the save.
You can test if that's the case, by making a temporary, new save. See if it still loads slow, or loads pretty quick.

I do see a couple errors, but they're unfortunately pretty vague on the cause:
Code:
20:01:30    TRACE    SpaceCore    Event: BeforeWarp
20:01:30    TRACE    game    Warping to UndergroundMine81
20:01:31    TRACE    SMAPI    Content Patcher edited Data/Festivals/FestivalDates (for the 'Ridgeside Village (Content Patcher component)' content pack).
20:01:31    DEBUG    SkullCavernElevator    Current lowest minelevel of player 297
20:01:31    DEBUG    SkullCavernElevator    Value of MineShaft.lowestMineLevel 297
20:01:31    DEBUG    SkullCavernElevator    Value of current mineShaft level 81
20:01:31    TRACE    Visible Fish    Warped to UndergroundMine81
20:01:31    TRACE    Visible Fish    No water here. Stop spawning fish in UndergroundMine81.
20:01:35    ERROR    game    An error occurred in the base update loop: NullReferenceException: Object reference not set to an instance of an object.
   at StardewValley.NPC.updateMovement(GameLocation location, GameTime time) in stardewvalley\Farmer\Farmer\NPC.cs:line 2678
   at StardewValley.Character.update(GameTime time, GameLocation location, Int64 id, Boolean move) in stardewvalley\Farmer\Farmer\Character.cs:line 1223
   at StardewValley.Character.update(GameTime time, GameLocation location) in stardewvalley\Farmer\Farmer\Character.cs:line 1162
   at StardewValley.NPC.update(GameTime time, GameLocation location) in stardewvalley\Farmer\Farmer\NPC.cs:line 2999
   at StardewValley.GameLocation.updateCharacters(GameTime time) in stardewvalley\Farmer\Farmer\Locations\GameLocation.cs:line 3511
   at StardewValley.GameLocation.updateEvenIfFarmerIsntHere(GameTime time, Boolean ignoreWasUpdatedFlush) in stardewvalley\Farmer\Farmer\Locations\GameLocation.cs:line 3542
   at StardewValley.Game1.UpdateLocations(GameTime time) in stardewvalley\Farmer\Farmer\Game1.cs:line 6492
   at StardewValley.Game1._update(GameTime gameTime) in stardewvalley\Farmer\Farmer\Game1.cs:line 4867
   at StardewValley.Game1.Update(GameTime gameTime) in stardewvalley\Farmer\Farmer\Game1.cs:line 3974
   at StardewModdingAPI.Framework.SCore.OnPlayerInstanceUpdating(SGame instance, GameTime gameTime, Action runUpdate) in SMAPI\Framework\SCore.cs:line 1117
 
Top