Unable to mount vault via mac fuse

My first problem with cryptomator so far. Until yesterday it works flawless. This morning i was unable to open the vault. Switch to webdav and it works. What’s the problem?

07:32:58.939 [main] INFO  org.cryptomator.launcher.Cryptomator - Starting Cryptomator 1.5.11 on Mac OS X 10.16 (x86_64)
07:32:58.942 [main] DEBUG org.cryptomator.logging.DebugMode - Debug mode enabled
07:32:58.942 [main] DEBUG org.cryptomator.launcher.IpcFactory - [Client] Failed to connect.
07:32:58.977 [main] DEBUG org.cryptomator.launcher.IpcFactory - [Server] Wrote IPC port 49821 to /Users/boerge/Library/Application Support/Cryptomator/ipcPort.bin
07:32:58.978 [main] DEBUG o.c.launcher.IpcProtocolImpl - Received launch args: 
07:32:58.979 [main] DEBUG org.cryptomator.launcher.Cryptomator - Did not find running application instance. Launching GUI...
07:32:59.211 [main] DEBUG o.c.ui.traymenu.TrayIconController - initialized tray icon
07:32:59.220 [main] DEBUG o.cryptomator.ui.launcher.UiLauncher - Hiding application...
07:32:59.230 [main] DEBUG org.cryptomator.common.CommonsModule - Starting App Background Thread 001
07:33:05.520 [AWT-EventQueue-0] DEBUG org.cryptomator.common.CommonsModule - Starting App Background Thread 002
07:33:05.521 [App Background Thread 002] DEBUG o.c.ui.launcher.FxApplicationStarter - Starting JavaFX runtime...
07:33:05.583 [JavaFX Application Thread] INFO  o.c.ui.launcher.FxApplicationStarter - JavaFX Runtime started.
07:33:05.718 [JavaFX Application Thread] TRACE o.cryptomator.ui.fxapp.FxApplication - FxApplication.start()
07:33:05.850 [JavaFX Application Thread] DEBUG org.cryptomator.common.CommonsModule - Starting App Background Thread 003
07:33:05.850 [JavaFX Application Thread] DEBUG o.cryptomator.ui.fxapp.FxApplication - Showing UnlockWindow for icloud
07:33:05.850 [JavaFX Application Thread] DEBUG o.c.common.vaults.VaultStats - stop recording stats
07:33:05.851 [JavaFX Application Thread] DEBUG o.c.ui.launcher.AppLifecycleListener - Allow quitting without prompt: false
07:33:05.862 [App Background Thread 003] DEBUG o.cryptomator.cryptofs.ReadonlyFlag - Vault opened for read and write.
07:33:06.086 [App Background Thread 003] DEBUG o.c.c.common.MasterkeyBackupHelper - Verified backup file: /Users/boerge/Library/Mobile Documents/iCloud~com~setolabs~Cryptomator/Documents/icloud/masterkey.cryptomator.9AA672AA.bkup
07:33:06.488 [JavaFX Application Thread] ERROR o.c.ui.unlock.UnlockWorkflow - Unlock failed for technical reasons.
org.cryptomator.common.vaults.Volume$VolumeException: Unable to mount Filesystem
	at org.cryptomator.common.vaults.FuseVolume.mount(FuseVolume.java:53)
	at org.cryptomator.common.vaults.FuseVolume.mount(FuseVolume.java:42)
	at org.cryptomator.common.vaults.Vault.unlock(Vault.java:129)
	at org.cryptomator.ui.unlock.UnlockWorkflow.attemptUnlock(UnlockWorkflow.java:107)
	at org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:90)
	at org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:44)
	at javafx.concurrent.Task$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)
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:48)
	at org.cryptomator.frontend.fuse.mount.Mounter.mount(Mounter.java:8)
	at org.cryptomator.common.vaults.FuseVolume.mount(FuseVolume.java:51)
	... 12 common frames omitted
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:46)
	... 14 common frames omitted
Caused by: ru.serce.jnrfuse.FuseException: Unable to mount FS, return code = 1
	at ru.serce.jnrfuse.AbstractFuseFS.mount(AbstractFuseFS.java:283)
	... 15 common frames omitted
07:33:06.570 [JavaFX Application Thread] DEBUG org.cryptomator.ui.common.FontLoader - Loaded family: Font Awesome 5 Free Solid
07:33:06.647 [JavaFX Application Thread] WARN  o.cryptomator.ui.fxapp.FxApplication - has visible stages: true
07:33:07.575 [JavaFX Application Thread] DEBUG o.c.common.vaults.VaultStats - stop recording stats
07:33:07.576 [JavaFX Application Thread] DEBUG o.c.ui.launcher.AppLifecycleListener - Allow quitting without prompt: true
07:33:11.655 [JavaFX Application Thread] WARN  o.cryptomator.ui.fxapp.FxApplication - has visible stages: false
07:33:18.187 [JavaFX Application Thread] WARN  o.cryptomator.ui.fxapp.FxApplication - has visible stages: true
07:33:18.328 [JavaFX Application Thread] DEBUG o.cryptomator.ui.fxapp.FxApplication - Showing Preferences
07:33:21.104 [JavaFX Application Thread] DEBUG org.cryptomator.common.CommonsModule - Starting App Scheduled Executor 01
07:33:22.108 [App Scheduled Executor 01] DEBUG o.c.common.settings.SettingsProvider - Attempting to save settings to /Users/boerge/Library/Application Support/Cryptomator/settings.json
07:33:22.115 [App Scheduled Executor 01] INFO  o.c.common.settings.SettingsProvider - Settings saved to /Users/boerge/Library/Application Support/Cryptomator/settings.json
07:33:22.767 [JavaFX Application Thread] WARN  o.cryptomator.ui.fxapp.FxApplication - has visible stages: false
07:33:27.690 [main] INFO  org.cryptomator.launcher.Cryptomator - UI shut down
07:33:27.691 [ShutdownTasks] DEBUG org.cryptomator.common.ShutdownHook - Running graceful shutdown tasks...

Did you try to update macFUSE to the latest version?

macFUSE is 4.0.5 and until yesterday cryptomator works perfectly.