[16:30:41] [Server thread/WARN]: java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke "java.util.Map.get(Object)" because the return value of "java.util.Map.get(Object)" is null
[16:30:41] [Server thread/WARN]: at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396)
[16:30:41] [Server thread/WARN]: at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2073)
[16:30:41] [Server thread/WARN]: at me.byteful.plugin.leveltools.libs.redlib.blockdata.BlockDataManager.unwrap(BlockDataManager.java:347)
[16:30:41] [Server thread/WARN]: at me.byteful.plugin.leveltools.libs.redlib.blockdata.BlockDataManager.getDataBlock(BlockDataManager.java:319)
[16:30:41] [Server thread/WARN]: at me.byteful.plugin.leveltools.libs.redlib.blockdata.BlockDataManager.getDataBlock(BlockDataManager.java:161)
[16:30:41] [Server thread/WARN]: at me.byteful.plugin.leveltools.libs.redlib.blockdata.BlockDataListener.onCombust(BlockDataListener.java:85)
SOLUTION: update to latest version of RedLib