Answers for "The Entity Framework tools version '3.1.9' is older than that of the runtime '5.0.0'. Update the tools for the latest features and bug fixes. System.ArgumentNullException: Value cannot be null. (Parameter 'connectionString')"

2

The EF Core tools version '3.1.0' is older than that of the runtime '3.1.3'

Use command line, Cmd or PowerShell for specific version:

dotnet tool update --global dotnet-ef --version 3.1.0

or

dotnet tool update --global dotnet-ef
Posted by: Guest on April-27-2020

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