title: Cannot create a DbSet for '...' because this type is not included in the model for the context
body: <p>I have a problem with entity framework, 
  The wreid is: my local machine with windows 10 and asp.net core SDK 2.1.802 work fine, but VPS with ubuntu 18.04, ASP.Net core SDK 2.1.802 is not.
  here is my DbContext, i already put property.</p>
  
  <pre><code>public partial class ApplicationDbContext : IdentityDbContext&lt;ApplicationUser&gt;
  {       
      public DbSet&lt;Contractor&gt; Contractors { get; set; }
  ....
  </code></pre>
  
  <p>but anything call to: <code>_dbContext.Contractors</code> on VPS got error:</p>
  
  <pre><code>System.InvalidOperationException: Cannot create a DbSet for 'Contractor' because this type is not included in the model for the context.
     at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.get_EntityType()
     at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.get_EntityQueryable()
  ....
  </code></pre>
  
  <p>the VPS health is good. cpu: 5%, ram 40%.
  And i see the wreid in my log on VPS:</p>
  
  <pre><code> at Portal.Controllers.ContractorController.All() in D:\petProject\src\Portal\Controllers\ContractorController.cs:line 47
  </code></pre>
  
  <p>the directory <code>D:\petProject\src\Portal\Controllers\ContractorController.cs</code> is my code folder on my local machine.
  but i always run this web on a terminal that SSH on my VPS.
  Please help me!</p>