Is there an existing issue for this?

• I have searched the existing issues.

Are you using the latest MineColonies Version?

• I am running the latest beta/release version of MineColonies for my Minecraft version.
  I am also running the latest versions of other mods that are part of my problem.

Did you check on the Wiki? or ask on Discord?

• I checked the MineColonies Wiki and made sure my issue is not covered there. Or I was sent from discord to open an issue here.

What were you playing at the time? Were you able to reproduce it in both settings?

• Single Player
• Multi Player

Minecraft Version

1.21

MineColonies Version

1.1.711-1.21.1-snpshot

Structurize Version

1.0.751-1.21.1-snapshot

Related Mods and their Versions

No response

Current Behavior

Transforming anything to or from 'Air' closes the world and takes you back to the server selection screen.

Expected Behavior

When I transform something from air (such as if I were trying to fill in an empty area), I expect that to work and not dump me to the server selection screen. Same with the other direction (effectively removing the solid or fluid blocks in that space).

Reproduction Steps

Using the scan tool, select a group of blocks, then show resources. Change blocks of your choice to air so that the connection to the server is closed.
(rejoin the world)
Using the scan tool, select a group of blocks with air mixed among them, then show resources. Change the air spaces to any other solid or fluid block so that the connection to the server is closed.

Logs

https://gist.github.com/DarQuing/5983b16421da559d8d8fc2c4fe46f48a

Anything else?

No response

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fixed