Prerequisites

• I am running the latest alpha version of MineColonies and Structurize for my Minecraft version.
• I checked the MineColonies/Structurize wiki and made sure my issue is not covered there.
• I made sure that this issue is not a duplicate of any existing issue.

Context

• Minecraft Version: 1.16.5
• MineColonies Version: minecolonies-0.14.291-ALPHA-universal
• Structurize Version: structurize-0.13.200-BETA-universal
• Related Mods and their Versions: Base mod pack direwolf20 for 1.16-1.10.1 minecolonies, structurize, mana-and-artifice, and rats have been upgraded.

Expected behavior

When the largest pirate ship is spawned, it should include spawners

Actual behavior

I've been playing a direwolf20 world for quite a while; upgrading minecolonies and structurize every week or so. I haven't had a pirate ship spawn in for several updates. One of the large ships spawned in today. The last time this happened there were multiple spawners above and below decks. Today, there were none.

The logs didn't contain much information:

[17Jul2021 12:15:16.605] [Server thread/WARN] [net.minecraft.server.MinecraftServer/]: Can't keep up! I
s the server overloaded? Running 8279ms or 165 ticks behind
[17Jul2021 12:15:36.409] [Render thread/INFO] [net.minecraft.client.gui.NewChatGui/]: [CHAT] Arr Comrade! There's some darn pirates from the North/East comin' for Laurel City tonight! They sailed 'ere and will continue attacking until we destroy their caravel.
[17Jul2021 12:15:40.139] [Server thread/WARN] [net.minecraft.server.MinecraftServer/]: Can't keep up! Is the server overloaded? Running 8563ms or 171 ticks behind

right after the ship spawned in, I began to experience quite a bit of stutter in my game. I moved my character as far as the shoreline, saw no pirates in the water yet, and then decided to restart minecraft to get rid of the lag.

After logging back in, I noticed that there still wasn't any pirate and the status bar that normally shows how many pirates/raiders are present was missing. When I swam out to the pirate ship, there was no pirates and no spawners present.

Steps to reproduce the issue

1. Play game with a pretty advanced colony (level 4 of most buildings)
2. Wait for a pirate raid
3. Notice that there are no pirate spawners on their ship

Logs

• latest.log:
• crashlog:

Notes

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Adding to this a little, a new pirate ship has spawned in. At least right now, there is a status bar for pirates remaining:

If I remember the layout of the ships, it looks like there are blocks of gold where the spawners should be:

Like I say, this started off life as a direwolf20-1.6 pack but I've been upgrading and adding a few mods as time has progressed. So if the schematics are right, perhaps the id for spawners was changed but my world doesn't reflect that? (OTOH, I think that some of the blocks of gold in the hold of the ship really are supposed to be blocks of gold and there's nothing wrong with them).