Help! An unexpected error occurred

I do not know what has happened and how to resolve. I would appreciate it if you could help.

java.nio.file.FileSystemAlreadyExistsException
	at org.cryptomator.cryptofs.CryptoFileSystems.lambda$create$0(CryptoFileSystems.java:49)
	at java.base/java.util.concurrent.ConcurrentHashMap.compute(Unknown Source)
	at org.cryptomator.cryptofs.CryptoFileSystems.create(CryptoFileSystems.java:40)
	at org.cryptomator.cryptofs.CryptoFileSystemProvider.newFileSystem(CryptoFileSystemProvider.java:301)
	at org.cryptomator.cryptofs.CryptoFileSystemProvider.newFileSystem(CryptoFileSystemProvider.java:93)
	at java.base/java.nio.file.FileSystems.newFileSystem(Unknown Source)
	at java.base/java.nio.file.FileSystems.newFileSystem(Unknown Source)
	at org.cryptomator.cryptofs.CryptoFileSystemProvider.newFileSystem(CryptoFileSystemProvider.java:134)
	at org.cryptomator.common.vaults.Vault.unlockCryptoFileSystem(Vault.java:126)
	at org.cryptomator.common.vaults.Vault.lambda$getCryptoFileSystem$0(Vault.java:104)
	at org.cryptomator.common.LazyInitializer.lambda$invokeFactoryIfNull$1(LazyInitializer.java:62)
	at java.base/java.util.concurrent.atomic.AtomicReference.updateAndGet(Unknown Source)
	at org.cryptomator.common.LazyInitializer.initializeLazily(LazyInitializer.java:49)
	at org.cryptomator.common.vaults.Vault.getCryptoFileSystem(Vault.java:104)
	at org.cryptomator.common.vaults.Vault.unlock(Vault.java:130)
	at org.cryptomator.ui.unlock.UnlockWorkflow.attemptUnlock(UnlockWorkflow.java:107)
	at org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:90)
	at org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:44)
	at javafx.concurrent.Task$TaskCallable.call(Task.java:1425)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)

UPDATE: After the computer restart, the application appears to be working normally again.

I actually have the same problem after updating my MacOS to BigSur! I cant access my vault!!

org.cryptomator.common.vaults.Volume$VolumeException: Unable to mount Filesystem
	at org.cryptomator.common.vaults.FuseVolume.mount(FuseVolume.java:107)
	at org.cryptomator.common.vaults.FuseVolume.mount(FuseVolume.java:58)
	at org.cryptomator.common.vaults.Vault.unlock(Vault.java:129)
	at org.cryptomator.ui.unlock.UnlockWorkflow.attemptUnlock(UnlockWorkflow.java:103)
	at org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:80)
	at org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:43)
	at javafx.concurrent.Task$TaskCallable.call(Task.java:1425)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)
Caused by: org.cryptomator.frontend.fuse.mount.CommandFailedException: ru.serce.jnrfuse.FuseException: Unable to mount FS
	at org.cryptomator.frontend.fuse.mount.MacMounter.mount(MacMounter.java:45)
	at org.cryptomator.common.vaults.FuseVolume.mount(FuseVolume.java:105)
	... 12 more
Caused by: ru.serce.jnrfuse.FuseException: Unable to mount FS
	at ru.serce.jnrfuse.AbstractFuseFS.mount(AbstractFuseFS.java:287)
	at org.cryptomator.frontend.fuse.mount.MacMounter.mount(MacMounter.java:43)
	... 13 more
Caused by: ru.serce.jnrfuse.FuseException: Unable to mount FS, return code = 1
	at ru.serce.jnrfuse.AbstractFuseFS.mount(AbstractFuseFS.java:283)
	... 14 more

Hey and welcome to the Cryptomator community :slightly_smiling_face:!

Even though you two have completely different problems:

Glad that yours is solved @adrian .

Regarding @axo, this Github issue should help you (which links to some topics in this forum as well): https://github.com/cryptomator/cryptomator/issues/1406