@kelianor
Just uploaded my log file. I had to zip it because otherwise it would exceed the 10MB limit
This bug still affects me on 1.21
[13:22:30] [IO-Worker-1940/ERROR]: Failed to save chunk 14,-1java.util.concurrent.CompletionException: java.io.IOException: Operation timed outat java.base/java.util.concurrent.CompletableFuture.encodeRelay(CompletableFuture.java:368) ~[?:?]at java.base/java.util.concurrent.CompletableFuture.completeRelay(CompletableFuture.java:377) ~[?:?]at java.base/java.util.concurrent.CompletableFuture$UniRelay.tryFire(CompletableFuture.java:1097) ~[?:?]at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510) ~[?:?]at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:2194) ~[?:?]at dwl.a(SourceFile:270) ~[server-1.21.jar:?]at dwl.b(SourceFile:256) ~[server-1.21.jar:?]at bpm$b.run(SourceFile:60) ~[server-1.21.jar:?]at bpk.h(SourceFile:91) ~[server-1.21.jar:?]at bpk.a(SourceFile:146) ~[server-1.21.jar:?]at bpk.run(SourceFile:102) ~[server-1.21.jar:?]at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?]at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?]at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]Caused by: java.io.IOException: Operation timed outat java.base/sun.nio.ch.UnixFileDispatcherImpl.pwrite0(Native Method) ~[?:?]at java.base/sun.nio.ch.UnixFileDispatcherImpl.pwrite(UnixFileDispatcherImpl.java:71) ~[?:?]at java.base/sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:135) ~[?:?]at java.base/sun.nio.ch.IOUtil.write(IOUtil.java:102) ~[?:?]at java.base/sun.nio.ch.IOUtil.write(IOUtil.java:72) ~[?:?]at java.base/sun.nio.ch.FileChannelImpl.writeInternal(FileChannelImpl.java:1028) ~[?:?]at java.base/sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:1012) ~[?:?]at dwp.a(SourceFile:423) ~[server-1.21.jar:?]at dwp$a.close(SourceFile:396) ~[server-1.21.jar:?]at java.base/java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:249) ~[?:?]at java.base/java.io.FilterOutputStream.close(FilterOutputStream.java:190) ~[?:?]at java.base/java.io.FilterOutputStream.close(FilterOutputStream.java:190) ~[?:?]at dwq.a(SourceFile:83) ~[server-1.21.jar:?]at dwl.a(SourceFile:266) ~[server-1.21.jar:?]... 8 more
Can confirm in 1.20.4, also applies to the `minecraft:generic.movement_speed` attribute in addition to potion effects
@syarumi Yes, pretty much, but it would be good to add to that issue that it is also an issue with attribute modifiers, not just potion effects.
This is a feature request, not a bug report.
Issue persists in latest pre-release. In fact, the issue is even worse now as the items refuse to manually stack.