I encountered two problems when I tried to perform Falling Block Swap in my server.I used the Generic Method in P1 to do it. In my two attempts, I made sure that Perma-Loader, 2*2 Beacon Chunk and Cluster were loaded normally in order(P2). I used rules

asyncBeaconUpdates

and

instantScheduing

in vascarpet. In my first attempt, I turned on generic method machine, but the game crashed a moment after starting.I checked the crash-report and found that a `ConcurrentModificationException`(P3). I started the second attempt after restore to the backup. This time I turned on the device in P4 to avoid CME as much as possible(This device is arranged in every chunk containing async observer line).When I pull down the "Generic Method" lever, MSPT will quickly become higher(**P5**&**P6**), and the server log will show the content in P7, and finally it will be killed by WatchDog(P8). The attachment I uploaded is the first crash report https://cdn.discordapp.com/attachments/961715982802501672/1557694464384835654/P1.png?ex=6ac8bb84&is=6ac76a04&hm=adaa8c0ad9263685625cdbea8120119ab27a7e91b2be5d572248f9a787f96dca& https://cdn.discordapp.com/attachments/961715982802501672/1557694464888279142/P2.png?ex=6ac8bb84&is=6ac76a04&hm=8cda205918deed70f5419dc749c9af3f9e18103ccc2aef561ea09c7fa4f7da1f& https://cdn.discordapp.com/attachments/961715982802501672/1557694465307844659/P3.png?ex=6ac8bb85&is=6ac76a05&hm=9ea4d5d0845172d4a236adc396753f2f617cf3790c1b99139217544ff3511339& https://cdn.discordapp.com/attachments/961715982802501672/1557694465739853875/P4.png?ex=6ac8bb85&is=6ac76a05&hm=621239f43fe5705dcf7acec724a990df71643327b022b066d6480992016c2eab& https://cdn.discordapp.com/attachments/961715982802501672/1557694466117214279/P5.png?ex=6ac8bb85&is=6ac76a05&hm=45a6024972be28ead5e83690d50f40d6a1fe3b7944ff7ea5945d991a9b6d6fce& https://cdn.discordapp.com/attachments/961715982802501672/1557694466591035442/P6.png?ex=6ac8bb85&is=6ac76a05&hm=ae613be219a3f67645c3bcface59b11165bb21a37392b57078667471d76f09b9& https://cdn.discordapp.com/attachments/961715982802501672/1557694466998140988/P7.png?ex=6ac8bb85&is=6ac76a05&hm=6403039e678233ce8b41b60fd14b3bbb22deaddbe4b1d5a0f5f71a97714f0fb4& https://cdn.discordapp.com/attachments/961715982802501672/1557694467329359912/P8.png?ex=6ac8bb85&is=6ac76a05&hm=0782473095e8173238ccc977fd6782cb7bb2968ce9086366ee0782fe6f577017& https://cdn.discordapp.com/attachments/961715982802501672/1557694467681558548/crash-2026-10-08_13.38.44-server.txt?ex=6ac8bb85&is=6ac76a05&hm=620481f7cbf5b86d716f6cd0649e56ff256a13260d893aa686b7aa9e31440d65&