Vault synced via cloudsync from cloud to my local truenas core, vault cant opened

Hello everybody.

I wanted to sync my cryptomator vault, hosted in pcloud, via cloudsync in truenas core at my local network.
The synchronisation was successful, but i cant open my vault, without getting this error:

Error Code 9H0U:HHG8:HHG8
java.nio.file.AccessDeniedException: X:\pCloud\c
	at java.base/sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
	at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
	at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
	at java.base/sun.nio.fs.WindowsFileSystemProvider.createDirectory(Unknown Source)
	at java.base/java.nio.file.Files.createDirectory(Unknown Source)
	at java.base/java.nio.file.Files.createAndCheckIsDirectory(Unknown Source)
	at java.base/java.nio.file.Files.createDirectories(Unknown Source)
	at org.cryptomator.cryptofs@2.1.1/org.cryptomator.cryptofs.common.FileSystemCapabilityChecker.determineSupportedCiphertextFileNameLength(FileSystemCapabilityChecker.java:136)
	at org.cryptomator.cryptofs@2.1.1/org.cryptomator.cryptofs.common.FileSystemCapabilityChecker.determineSupportedCiphertextFileNameLength(FileSystemCapabilityChecker.java:113)
	at org.cryptomator.desktop@1.6.1/org.cryptomator.common.vaults.Vault.createCryptoFileSystem(Vault.java:111)
	at org.cryptomator.desktop@1.6.1/org.cryptomator.common.vaults.Vault.unlock(Vault.java:148)
	at org.cryptomator.desktop@1.6.1/org.cryptomator.ui.keyloading.KeyLoadingStrategy.use(KeyLoadingStrategy.java:79)
	at org.cryptomator.desktop@1.6.1/org.cryptomator.ui.unlock.UnlockWorkflow.attemptUnlock(UnlockWorkflow.java:71)
	at org.cryptomator.desktop@1.6.1/org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:61)
	at org.cryptomator.desktop@1.6.1/org.cryptomator.ui.unlock.UnlockWorkflow.call(UnlockWorkflow.java:34)
	at javafx.graphics/javafx.concurrent.Task$TaskCallable.call(Task.java:1426)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.Executors$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)

Could anybody please help me ?

Greetings
Huschke

Looks like something is preventing cryptomator to access the encrypted vault files.