The error below suddenly appear after VM ran for 60 days. Other VPS with the same config running just fine!
Error showed up when clicking to the VM.

Server Error in '/' Application.
Value was either too large or too small for an Int32.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 
Exception Details: System.OverflowException: Value was either too large or too small for an Int32.
Source Error: 
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace: 
[OverflowException: Value was either too large or too small for an Int32.]
System.Convert.ToInt32(Double value) +14682515
SolidCP.Portal.VPS2012.VpsDetailsGeneral.BindGeneralDetails() +2629
SolidCP.Portal.VPS2012.VpsDetailsGeneral.Page_Load(Object sender, EventArgs e) +17
System.Web.UI.Control.OnLoad(EventArgs e) +106
SolidCP.Portal.SolidCPModuleBase.OnLoad(EventArgs e) +34
System.Web.UI.Control.LoadRecursive() +68
System.Web.UI.Control.LoadRecursive() +162
System.Web.UI.Control.LoadRecursive() +162
System.Web.UI.Control.LoadRecursive() +162
System.Web.UI.Control.LoadRecursive() +162
System.Web.UI.Control.LoadRecursive() +162
System.Web.UI.Control.LoadRecursive() +162
System.Web.UI.Control.LoadRecursive() +162
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1377