Incompatible character Encodings:utf-8 and Ascii-8bit

Http://stackoverflow.com/questions/5286117/incompatible-character-encodings-ascii-8bit-and-utf-8

Http://stackoverflow.com/questions/22932282/gemloaderror-specified-mysql2-for-database-adapter-but-the-gem-is-not-loade

This is because MySQL is written in Gemfile and Database.yml,

It should be mysql2.

A new error was reported after the change: "

Gem::loaderror Specified ' MYSQL2 ' for database adapter, but the gem was not loaded. Add ' Gem ' mysql2 ' to your gemfile

”

Configure the version of MYSQL2

If you had this error when upgrading to Rails 4.2.4 (also with rails 4.1.5) Try using the This version of MYSQL2:

gem ‘mysql2‘, ‘~> 0.3.18‘

Incompatible character Encodings:utf-8 and Ascii-8bit