amp error

    ./ampinstmgr CreateInstance McMyAdmin MCMA 0.0.0.0 8080 redactedkey redactedpass +Core.Login.Username redacteduser
    [Info] AMP Instance Manager v1.4.6.5
    [Debug] Loading instances from /home/AMP/.ampdata/instances.json...
    [Debug] /home/AMP/.ampdata/instances.json does not exist, using empty dataset.
    [Info] Creating Instance: 'MCMA'
    [Info] Performing Step: Creating Environment
    [Error] Couldn't lookup user details for current user.
    Value cannot be null.
    Parameter name: path1
    [Error] Instance creation failed.
    [Error]   at System.Threading.Tasks.Task.ThrowIfExceptional (System.Boolean includeTaskCanceledExceptions) [0x00011] in <3574b7750bbd4f3481d1561b74d01b33>:0
      at System.Threading.Tasks.Task`1[TResult].GetResultCore (System.Boolean waitCompletionNotification) [0x0002b] in <3574b7750bbd4f3481d1561b74d01b33>:0
      at System.Threading.Tasks.Task`1[TResult].get_Result () [0x0000f] in <3574b7750bbd4f3481d1561b74d01b33>:0
      at InstanceManagerCLI.Core.CreateInstance (System.String Module, System.String InstanceName, System.String IPBinding, System.Int32 PortNumber, System.String LicenceKey, System.String AdminPassword, System.Collections.Generic.Dictionary`2[TKey,TValue] ProvisionSettings) [0x0008c] in <5bec138c8e1a4fc086c3e11b2bbbd05c>:0