Hi, I've recently came across this error, and it's unable to protect the texturepack. I'm using 1.20.1 as my server version and the latest itemsadder version.
10.12 19:34:29 [Server] [INFO] outrated issued server command: /iazip
10.12 19:34:29 [Server] [INFO] [ItemsAdder] [Host] Stopped self-host webserver on port: 8072
10.12 19:34:29 [Server] [INFO] [ItemsAdder] [Host] Starting self-host webserver on port: 8072
10.12 19:34:29 [Server] [INFO] [ItemsAdder] [Pack] Extracting internal contents from .jar
10.12 19:34:29 [Server] [INFO] [ItemsAdder] [Pack] DONE extracting internal contents from .jar
10.12 19:34:29 [Server] [INFO] [ItemsAdder] Loaded 59 items
10.12 19:34:29 [Server] [INFO] [ItemsAdder] Used 0/188 REAL block IDs
10.12 19:34:29 [Server] [INFO] [ItemsAdder] Used 0/750 REAL_NOTE block IDs
10.12 19:34:29 [Server] [INFO] [ItemsAdder] Used 0/63 REAL_TRANSPARENT block IDs
10.12 19:34:29 [Server] [INFO] [ItemsAdder] Used 0/127 REAL_WIRE block IDs
10.12 19:34:29 [Server] [INFO] [ItemsAdder] Used 0/14 FIRE block IDs
10.12 19:34:29 [Server] [INFO] [ItemsAdder] Used 45/6608 font_images
10.12 19:34:29 [Server] [INFO] [ItemsAdder] [Init] Loaded 3 categories
10.12 19:34:29 [Server] [INFO] [ItemsAdder] [Init] Loaded successfully in 73ms
10.12 19:34:29 [Server] [INFO] [ItemsAdder]
10.12 19:34:29 [Server] [INFO] [ItemsAdder]
10.12 19:34:29 [Server] [INFO] [ItemsAdder] [Pack] Started generation
10.12 19:34:29 [Server] [INFO] [PlaceholderAPI] Successfully registered internal expansion: img [1.0.1]
10.12 19:34:29 [Server] [INFO] [PlaceholderAPI] Successfully registered internal expansion: iaplayerstat [1.0.1]
10.12 19:34:29 [Server] [INFO] [ItemsAdder] Reloading ItemsAdder Custom Entities Citizens NPCs
10.12 19:34:30 [Server] [WARN] [EntityLookup] Entity uuid already exists: 1cf4b649-fc37-2c1e-8f87-57c7497669ee, mapped to EntityHumanNPC[''/3754, uuid='1cf4b649-fc37-2c1e-8f87-57c7497669ee', l='ServerLevel[Spawn]', x=490.70, y=30.00, z=124.55, cpos=[30, 7], tl=0, v=true]( at 490.7,30.0,124.5513), can't add EntityHumanNPC[''/3758, uuid='1cf4b649-fc37-2c1e-8f87-57c7497669ee', l='ServerLevel[Spawn]', x=480.50, y=30.00, z=128.50, cpos=[30, 8], tl=0, v=false]( at 480.5,30.0,128.5)
10.12 19:34:30 [Server] [WARN] [ItemsAdder] Duplicate char (\\uF808) 'space:font/space_split.png'. File: contents/Example/assets/minecraft/font/default.json
10.12 19:34:30 [Server] [INFO] [ItemsAdder]
10.12 19:34:30 [Server] [INFO] [ItemsAdder] [Pack] Generated resourcepack
10.12 19:34:30 [Server] [INFO] [ItemsAdder] [OK] Your zip file will be protected from unzip (as set in config.yml)
10.12 19:34:30 [Server] [INFO] [ItemsAdder] [Pack] Compressing resource_pack ...
10.12 19:34:30 [Server] [ERROR] [ItemsAdder] Failed to protect zip file.
10.12 19:34:30 [Server] [WARN] java.lang.IndexOutOfBoundsException
10.12 19:34:30 [Server] [WARN] at java.base/java.io.RandomAccessFile.writeBytes(Native Method)
10.12 19:34:30 [Server] [WARN] at java.base/java.io.RandomAccessFile.write(RandomAccessFile.java:558)
10.12 19:34:30 [Server] [WARN] at ItemsAdder_3.6.2c.jar//ia.m.jq.e(SourceFile:116)
10.12 19:34:30 [Server] [WARN] at ItemsAdder_3.6.2c.jar//ia.m.jd.a(SourceFile:229)
10.12 19:34:30 [Server] [WARN] at ItemsAdder_3.6.2c.jar//ia.m.jh.a(SourceFile:436)
10.12 19:34:30 [Server] [WARN] at org.bukkit.craftbukkit.v1_20_R1.scheduler.CraftTask.run(CraftTask.java:101)
10.12 19:34:30 [Server] [WARN] at org.bukkit.craftbukkit.v1_20_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57)
10.12 19:34:30 [Server] [WARN] at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22)
10.12 19:34:30 [Server] [WARN] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
10.12 19:34:30 [Server] [WARN] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
10.12 19:34:30 [Server] [WARN] at java.base/java.lang.Thread.run(Thread.java:833)
