Exceptions

Type: OpcLabs.EasyOpc.UA.OperationModel.UAException
Data: 
HelpLink: 
HResult: -2146233088 (0x80131500)
InnerException:
    OpcLabs.EasyOpc.UA.OperationModel.UAException: An OPC-UA operation failure with error code -1 (0xFFFFFFFF) occurred, originating from ''. The inner exception, of type 'OpcLabs.EasyOpc.UA.Engine.UAClientEngineException', contains details about the problem. ---> OpcLabs.EasyOpc.UA.Engine.UAClientEngineException: Cannot lock the OPC-UA client session because it is not available.
       --- End of inner exception stack trace ---
       at OpcLabs.EasyOpc.UA.IEasyUAClientExtension.Browse(IEasyUAClient client, UAEndpointDescriptor endpointDescriptor, UANodeDescriptor nodeDescriptor, UABrowseParameters browseParameters)
       at OpcLabs.EasyOpc.UA.Browsing.UANodeBrowseable.BrowseNodes(Object parentNode, UABrowseParameters browseParameters, Predicate`1 nodePredicate, IEnumerable`1& leaves, IEnumerable`1& exceptions)
    Data: 
    Error Code: -1
    HelpLink: 
    HResult: -2146233088 (0x80131500)
    Inner Exception: OpcLabs.EasyOpc.UA.Engine.UAClientEngineException: Cannot lock the OPC-UA client session because it is not available.
        Data: 
        Error Code: 2307
        HelpLink: 
        HResult: -2146233088 (0x80131500)
        InnerException: 
        Message: Cannot lock the OPC-UA client session because it is not available.
        Source: 
        StackTrace: 
        TargetSite: 
    Message: An OPC-UA operation failure with error code -1 (0xFFFFFFFF) occurred, originating from ''. The inner exception, of type 'OpcLabs.EasyOpc.UA.Engine.UAClientEngineException', contains details about the problem.
    Source: OpcLabs.EasyOpcUA
    StackTrace:
           at OpcLabs.EasyOpc.UA.IEasyUAClientExtension.Browse(IEasyUAClient client, UAEndpointDescriptor endpointDescriptor, UANodeDescriptor nodeDescriptor, UABrowseParameters browseParameters)
           at OpcLabs.EasyOpc.UA.Browsing.UANodeBrowseable.BrowseNodes(Object parentNode, UABrowseParameters browseParameters, Predicate`1 nodePredicate, IEnumerable`1& leaves, IEnumerable`1& exceptions)
    TargetSite: OpcLabs.EasyOpc.UA.AddressSpace.UANodeElementCollection Browse(OpcLabs.EasyOpc.UA.IEasyUAClient, OpcLabs.EasyOpc.UA.UAEndpointDescriptor, OpcLabs.EasyOpc.UA.UANodeDescriptor, OpcLabs.EasyOpc.UA.UABrowseParameters)
        DeclaringType: OpcLabs.EasyOpc.UA.IEasyUAClientExtension
        Module: OpcLabs.EasyOpcUA.dll
            Assembly: OpcLabs.EasyOpcUA, Version=5.53.225.1, Culture=neutral, PublicKeyToken=6faddca41dacb409
            CustomAttributes: 
            FullyQualifiedName: C:\Program Files (x86)\OPC Labs QuickOPC 2018.2\Bin\OpcLabs.EasyOpcUA.dll
            MDStreamVersion: 131072
            MetadataToken: 1
            ModuleHandle: System.ModuleHandle
                MDStreamVersion: 131072
            ModuleVersionId: b29552bc-e61a-490b-9a37-51bf29350b50
            Name: OpcLabs.EasyOpcUA.dll
            ScopeName: OpcLabs.EasyOpcUA.dll
Message: Problem browsing OPC Unified Architecture nodes.
Source: 
StackTrace: 
TargetSite: