Specified key was too long; max key length is 767 bytes - Entity Framework with MySQL

If you receive the following error "Specified key was too long; max key length is 767 bytes" when using Entity Framework with MySQL, manually edit the "__migrationhistory" table and modify the column "ContextKey" to varchar(250)

Config file - Entity Framework with MySQL

Error:
Failed to set Database.DefaultConnectionFactory to an instance of the 'MySql.Data.Entity.MySqlConnectionFactory, MySql.Data.Entity' type as specified in the application configuration.

Solution: 

<?xml version="1.0" encoding="utf-8"?>

<configuration>

  <configSections>

    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->

    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />

  </configSections>

  <!--<entityFramework>

    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />

    <providers>

      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />

    </providers>

  </entityFramework>-->

  <entityFramework>

    <defaultConnectionFactory type="MySql.Data.Entity.MySqlConnectionFactory, MySql.Data.Entity.EF6"></defaultConnectionFactory>

    <providers>

      <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6"></provider>

    </providers>

  </entityFramework>

  <system.data>

    <DbProviderFactories>

      <remove invariant="MySql.Data.MySqlClient"/>

      <add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory,MySql.Data, Version=6.8.3.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />

    </DbProviderFactories>

  </system.data>

  <connectionStrings>

    <add name="ConnectionStringName" connectionString="server=<servername>;Database=<dbanem>;uid=<dbusername>;pwd=<dbpassword>;" providerName="MySql.Data.MySqlClient" />

  </connectionStrings>

</configuration>