Can't load save

[Cassy-Lee]

Description:
Nothing happened after used /bbor:structures load and chosen a world.
Minecraft version: 1.21
BBOR version: v2.6-1.21
log after used /bbor:structures load:

[20:05:58] [Worker-Main-71/WARN]: Failed to read [path] lock
java.nio.channels.OverlappingFileLockException: null
        at java.base/sun.nio.ch.FileLockTable.checkList(FileLockTable.java:229) ~[?:?]
        at java.base/sun.nio.ch.FileLockTable.add(FileLockTable.java:123) ~[?:?]
        at java.base/sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:1524) ~[?:?]
        at java.base/java.nio.channels.FileChannel.tryLock(FileChannel.java:1360) ~[?:?]
        at net.minecraft.class_5125.method_26804(class_5125.java:80) ~[client-intermediary.jar:?]
        at net.minecraft.class_32.method_43418(class_32.java:171) ~[client-intermediary.jar:?]
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) [?:?]
        at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1760) [?:?]
        at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) [?:?]
        at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) [?:?]
        at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) [?:?]
        at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) [?:?]
        at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) [?:?]