提供程序未返回 ProviderManifestToken 字符串

连接字符串写错导致，修改后OK。

原来的：
 <connectionStrings>
    <add name="EFDbContext" connectionString="server=192.161.0.11;Initial Catalog=SportsStore;User ID=sa;Password=global"
  providerName="MySql.Data.MySqlClient "/>


  </connectionStrings>

修改后的：
 <connectionStrings>
    <add name="EFDbContext" connectionString="Data Source=localhost;Initial Catalog=SportsStore;;User ID=XXX;Password=XXX"
  providerName="MySql.Data.MySqlClient "/>