mysql - Ruby on Rails 4 select schema_migrations Error -

guy today open old ruby project after copy files sites folder run commands

bundle rake db:create rake db:migrate rails s 

when open project on browser found project gives me errors because mysql not work me got error on console

activerecord::schemamigation load (68.0ms) select 'schema_migrations'.* 'schema_migrations' processing homecontroller#index html completed 500 internal server error in 92ms log writing faild. invalid byte sequence in us-ascii  

so why got error , how can solve ??

i solved now

just solve us-ascii issue added line first line in model page

#encoding: utf-8 

also added lines

if ruby_version =~ /1.9/     encoding.default_external = encoding::utf_8     encoding.default_internal = encoding::utf_8 end 

in gemfile

then got error told me use protected_attributes

so added line

gem 'protected_attributes' 

in gemfile , execute:

$ bundle