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:1.15.2 and 1.16
• MineColonies Version:
• Structurize Version:

Problem description

BUILD FAILED in 1m 30s
1 actionable task: 1 executed
Could not find net.minecraftforge:forge:1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.
Searched in the following locations:

• https://jcenter.bintray.com/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.pom
• https://jcenter.bintray.com/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.jar
• https://repo.maven.apache.org/maven2/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.pom
• https://repo.maven.apache.org/maven2/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.jar
• https://ldtteam.jfrog.io/ldtteam/modding/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.pom
• https://ldtteam.jfrog.io/ldtteam/modding/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.jar
• file:/C:/JAVA/MC/minecolonies/libs/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.jar
• file:/C:/JAVA/MC/minecolonies/libs/forge.jar
• https://files.minecraftforge.net/maven/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.pom
• https://files.minecraftforge.net/maven/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.jar
• file:/C:/Users/42527/.gradle/caches/forge_gradle/bundeled_repo/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.pom
• file:/C:/Users/42527/.gradle/caches/forge_gradle/bundeled_repo/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.jar
• https://libraries.minecraft.net/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.jar
• https://repo.maven.apache.org/maven2/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.pom
• https://repo.maven.apache.org/maven2/net/minecraftforge/forge/1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c/forge-1.15.2-31.2.33_mapped_snapshot_20200606-1.15.1_at_cb2c348669d4247ac6bd90d0f130be6a4cde8e4c.jar
  Required by:
  project :
  22:15:11: Task execution finished 'prepareRunClient'.

Notes or related things

help me please

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do some gradle refreshes that should solve it.

No matter use, I refreshed gradle @Raycoms

It's not really a Minecolonies issue since it's trying to query a forge version/mapping. However, that one works fine for us.
So I'm not sure what to tell you here.

Gradle has its "issues" quite often, so querying back and forth etc usually ends up solving it.

https://forums.minecraftforge.net/topic/93143-could-not-find-netminecraftforgeforge1163-34135_mapped_snapshot_20201028-1163/
solved in there. this is a problem of gradle. thanks