First : move the solution to a short path on you machine .. path should be short so the visual studio can install all nuget packages

Seconde : if the database has been created ,delete it and recreate it again using the commands

if you still have error we can meet on zoom to fix it

Unable to create an object of type ‘CommonDbContext’. For the different patterns supported at design time, see https://go.microsoft.com/fwlink/?linkid=851728

Can we meet on zoom now?

As i have seen this problem is at other products too We can have a zoom meeting but i think we must talk about time.My time is GMT + 1 hour. So I presume .that we must consider this .

now the time is 5:00 pm in KSA , we can meet at 8:00 PM , it means after 3 hours from now

I’m waiting for you to join the meeting

if you can’t join the meeting you can try this

1 – Delete the database 2 – Run the following commands

Open [Package manager console] and in the [Default project] list .. select [Common.Persistance] project

Write the below commands

add-migration CreateCommon -context CommonDbContext update-database -context CommonDbContext

Open [Package manager console] and in the [Default project] list .. select [UserManagement.Persistance] project

Write the below commands

add-migration CreateIdentity -context ApplicationDbContext update-database -context ApplicationDbContext

Open [Package manager console] and in the [Default project] list .. select [SimplePos.Persistance] project

add-migration CreateSimplePOS -context SimplePosDbContext update-database -context SimplePosDbContext

are these errors? 20>——Rebuild All started: Project: SimplePos.Web, Configuration: Debug Any CPU —— 20>D:\Projects\SimplePos\SimplePos\SimplePos.Web\Pages\Index.cshtml.cs(48,30,48,32): warning CS0168: The variable ‘ex’ is declared but never used 20>D:\Projects\SimplePos\SimplePos\SimplePos.Web\Pages\Index.cshtml.cs(61,30,61,32): warning CS0168: The variable ‘ex’ is declared but never used 20>D:\Projects\SimplePos\SimplePos\SimplePos.Web\Pages\Index.cshtml.cs(74,30,74,32): warning CS0168: The variable ‘ex’ is declared but never used 20>D:\Projects\SimplePos\SimplePos\SimplePos.Web\Code\EmailService.cs(10,50,10,59): warning CS1998: This async method lacks ‘await’ operators and will run synchronously. Consider using the ‘await’ operator to await non-blocking API calls, or ‘await Task.Run(...)’ to do CPU-bound work on a background thread. 20>D:\Projects\SimplePos\SimplePos\SimplePos.Web\Code\EmailSender.cs(37,30,37,32): warning CS0168: The variable ‘ex’ is declared but never used 20>D:\Projects\SimplePos\SimplePos\SimplePos.Web\Code\EmailSender.cs(18,27,18,41): warning CS1998: This async method lacks ‘await’ operators and will run synchronously. Consider using the ‘await’ operator to await non-blocking API calls, or ‘await Task.Run(...)’ to do CPU-bound work on a background thread. 20>D:\Projects\SimplePos\SimplePos\SimplePos.Web\Areas\Management\Pages\Samples\Create.cshtml.cs(43,42,43,47): warning CS1998: This async method lacks ‘await’ operators and will run synchronously. Consider using the ‘await’ operator to await non-blocking API calls, or ‘await Task.Run(...)’ to do CPU-bound work on a background thread. 20>D:\Projects\SimplePos\SimplePos\SimplePos.Web\Areas\Management\Pages\Products\Create.cshtml.cs(32,42,32,47): warning CS1998: This async method lacks ‘await’ operators and will run synchronously. Consider using the ‘await’ operator to await non-blocking API calls, or ‘await Task.Run(...)’ to do CPU-bound work on a background thread. 20>D:\Projects\SimplePos\SimplePos\SimplePos.Web\Areas\Management\Pages\Companies\Create.cshtml.cs(43,42,43,47): warning CS1998: This async method lacks ‘await’ operators and will run synchronously. Consider using the ‘await’ operator to await non-blocking API calls, or ‘await Task.Run(...)’ to do CPU-bound work on a background thread. 20>D:\Projects\SimplePos\SimplePos\SimplePos.Web\Areas\Management\Pages\Customers\Create.cshtml.cs(32,42,32,47): warning CS1998: This async method lacks ‘await’ operators and will run synchronously. Consider using the ‘await’ operator to await non-blocking API calls, or ‘await Task.Run(...)’ to do CPU-bound work on a background thread. 20>CSC : warning AD0001: Analyzer ‘Microsoft.AspNetCore.Mvc.Analyzers.TopLevelParameterNameAnalyzer’ threw an exception of type ‘System.NullReferenceException’ with message ‘Object reference not set to an instance of an object.’.

I will wait for an update. Thank you!

All these are warnings not errors, application should work fine if you run commands correctly to generate the database