From a0c373bec6af6f768c07bda85a0a567b802571be Mon Sep 17 00:00:00 2001
From: Anuken <arnukren@gmail.com>
Date: Wed, 16 Feb 2022 00:26:15 -0500
Subject: [PATCH] Fixed crash

---
 core/src/mindustry/ai/ControlPathfinder.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/src/mindustry/ai/ControlPathfinder.java b/core/src/mindustry/ai/ControlPathfinder.java
index 3110cb20e4..5a52a07055 100644
--- a/core/src/mindustry/ai/ControlPathfinder.java
+++ b/core/src/mindustry/ai/ControlPathfinder.java
@@ -92,7 +92,8 @@ public class ControlPathfinder{
             for(var req : requests.values()){
                 //skipped N update -> drop it
                 if(req.lastUpdateId <= state.updateId - 10){
-                    requests.remove(req.unit);
+                    //concurrent modification!
+                    Core.app.post(() -> requests.remove(req.unit));
                     req.thread.queue.post(() -> req.thread.requests.remove(req));
                 }
             }