Instance not starting

Technical Support
,
1

OS Name/Version: Debian 13

Product Name/Version: AMP ‘Phobos’ v.2.6.3.2 (mainline)

Problem Description: When I attempt to start my Minecraft server, it fails to start. The notification on the bottom right spins eternally with no change. Attempted to start with CLI, nothing happens:

  CubeCoders AMP  💻amp@Odin  📁~  ampinstmgr -s SluttyMC01
[Info/1] AMP Instance Manager v2.6.3.2 built 22/10/2025 11:12
[Info/1] Stream: Mainline / Release - built by CUBECODERS/buildbot on CCL-DEV
[Info/1] Starting Instance: 'SluttyMC01'

AMP Logs say the following: (removed start due to char limit)

at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:05] [Core:Anonymous Error/13] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:05] [System:Anonymous Warning/9] : Exception in API call Core/GetUpdates
[12:40:05] [Core:Anonymous Error/9] : UnauthorizedAccessException
[12:40:05] [Core:Anonymous Error/9] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:05] [System:Anonymous Warning/20] : Exception in API call Core/GetUpdates
[12:40:05] [Core:Anonymous Error/20] : UnauthorizedAccessException
[12:40:05] [Core:Anonymous Error/20] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:05] [Core:Anonymous Error/9] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:05] [Core:Anonymous Error/20] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:05] [System:Anonymous Warning/13] : Exception in API call Core/GetUpdates
[12:40:05] [Core:Anonymous Error/13] : UnauthorizedAccessException
[12:40:05] [Core:Anonymous Error/13] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:05] [System:Anonymous Warning/10] : Exception in API call Core/GetUpdates
[12:40:05] [Core:Anonymous Error/10] : UnauthorizedAccessException
[12:40:05] [Core:Anonymous Error/10] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:05] [Core:Anonymous Error/13] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:05] [Core:Anonymous Error/10] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:05] [System:Anonymous Warning/21] : Exception in API call Core/GetUpdates
[12:40:05] [Core:Anonymous Error/21] : UnauthorizedAccessException
[12:40:05] [Core:Anonymous Error/21] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:05] [Core:Anonymous Error/21] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:05] [System:Anonymous Warning/20] : Exception in API call Core/GetUpdates
[12:40:05] [Core:Anonymous Error/20] : UnauthorizedAccessException
[12:40:05] [Core:Anonymous Error/20] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:05] [Core:Anonymous Error/20] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/30] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/30] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/30] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/30] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/13] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/13] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/13] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/13] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/19] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/19] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/19] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/19] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/19] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/19] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/19] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/19] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/13] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/13] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/13] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/13] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/48] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/48] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/48] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/48] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/13] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/13] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/13] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/13] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/13] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/13] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/13] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/13] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/48] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/48] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/48] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/48] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/13] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/13] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/13] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/13] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/48] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/48] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/48] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/48] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/13] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/13] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/13] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/13] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/27] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/27] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/27] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [System:Anonymous Warning/40] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/40] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/40] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/27] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [Core:Anonymous Error/40] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [System:Anonymous Warning/13] : Exception in API call Core/GetUpdates
[12:40:06] [Core:Anonymous Error/13] : UnauthorizedAccessException
[12:40:06] [Core:Anonymous Error/13] : [0] (UnauthorizedAccessException) : You do not have permission to use this method (GSMyAdmin.WebServer.GetUpdates) at this time. This method requires the Session.Exists permission.
[12:40:06] [Core:Anonymous Error/13] : at GSMyAdmin.WebServer.WebAttributes.InvokeMethod(String MethodName, JObject Data, HttpContext context, IWebSession Session, WebMethodsBase MethodsClass, IPAddress RealIP)
at GSMyAdmin.WebServer.ApiService.InvokeAPI(HttpContext context, IWebSession session, JObject data, String requestModule, String requestMethod)
[12:40:06] [Webserver Error/33] : Connection id “0HNH51L2D7B4Q”, Request id “0HNH51L2D7B4Q:0000000D”: An unhandled exception was thrown by the application.
[12:40:06] [Webserver Error/28] : Connection id “0HNH51L2D7B4V”, Request id “0HNH51L2D7B4V:00000002”: An unhandled exception was thrown by the application.
[12:40:06] [Webserver Error/39] : Connection id “0HNH51L2D7B52”, Request id “0HNH51L2D7B52:00000002”: An unhandled exception was thrown by the application.
[12:40:06] [System Warning/15] : WebSocket error: The remote party closed the WebSocket connection without completing the close handshake.

Steps to reproduce:

  • Step 1: Move the server to another room and boot it up
  • Step 2: Open AMP control panel
  • Step 3: Click Start Instance in the control panel

Actions taken to resolve so far:

  • Verify server has the same IP as before. It does
  • restart instance with ampinstmgr reactivate SluttyMC01 and ampinstmgr reactivate ADS01
2

`Session.Exists` errors generally mean the session token in your browser is stale, and you may need to just force refresh things with Ctrl+F5.
If that doesn’t do it, try updating your AMP install and see how that rolls
https://discourse.cubecoders.com/t/how-to-update-amp-to-the-latest-version/2297