"Could not find site on the remote SharePoint server" error message (4276815)

When migrating HTML/ASPX pages, the following error message is encountered:

Error: Property accessor 'DefaultPageLayout' on object 'Metalogix.Website.Actions.PasteDocumentsAsWebPagesOptions' threw the following exception:'An error occurred during the operation of a service met,hod: Could not find site on the remote SharePoint server: 'https://..'. ' 
Stack: at System.ComponentModel.ReflectPropertyDescriptor.GetValue(Object component)
   at Metalogix.OptionsBase.SetFromOptions(OptionsBase options)
   at Metalogix.Actions.ActionOptionsTemplate.SetOptions(Action action, Boolean setUnstickyProperties)
   at Metalogix.Actions.ActionOptionsProvider.SetOptionsToDefault(Action action)
   at Metalogix.UI.WinForms.Actions.ActionPaletteControl.On_ActionClick(Object sender, EventArgs e)

However, the migration of other files like PDF works fine. It may also be a scenario where the ASPX pages used to migrate fine, but at some point their migration failed.

Reset the Content Matrix configuration by doing the following:

1. Click on the Settings tab of the Content Matrix console.
2. Enable the Advanced Mode, then click the Reset Configuration Options button.