Calibre Plugin Error #4000

Fehler #4000:
exception 'OMVException' with message 'Failed to execute command 'omv-mkconf calibre 2>&1': /etc/init.d/calibre: 1: /etc/calibre-server.conf: Bibliothek/: not found
cp: angegebenes Ziel „Bibliothek//“ ist kein Verzeichnis' in /usr/share/openmediavault/engined/module/calibre.inc:83
Stack trace:
#0 /usr/share/openmediavault/engined/rpc/config.inc(180): OMVModuleCalibre->applyConfig()
#1 [internal function]: OMVRpcServiceConfig->applyChanges(Array, Array)
#2 /usr/share/php/openmediavault/rpcservice.inc(125): call_user_func_array(Array, Array)
#3 /usr/share/php/openmediavault/rpcservice.inc(158): OMVRpcServiceAbstract->callMethod('applyChanges', Array, Array)
#4 /usr/share/openmediavault/engined/rpc/config.inc(224): OMVRpcServiceAbstract->callMethodBg('applyChanges', Array, Array)
#5 [internal function]: OMVRpcServiceConfig->applyChangesBg(Array, Array)
#6 /usr/share/php/openmediavault/rpcservice.inc(125): call_user_func_array(Array, Array)
#7 /usr/share/php/openmediavault/rpc.inc(79): OMVRpcServiceAbstract->callMethod('applyChangesBg', Array, Array)
#8 /usr/sbin/omv-engined(500): OMVRpc::exec('Config', 'applyChangesBg', Array, Array, 1)
#9 {main}