create wiki page get 500 error
installed version: gitlab-ce 8.4.4
Encoding::CompatibilityError (incompatible character encodings: UTF-8 and ASCII-8BIT):
Started POST "/android/XXXProject/markdown_preview" for 127.0.0.1 at 2016-02-22 18:00:50 +0800
Processing by ProjectsController#markdown_preview as JSON
Parameters: {"text"=>"todo", "namespace_id"=>"android", "id"=>"XXXProject"}
Completed 200 OK in 124ms (Views: 0.7ms | ActiveRecord: 9.2ms)
Started POST "/android/XXXProject/wikis" for 127.0.0.1 at 2016-02-22 18:00:56 +0800
Processing by Projects::WikisController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"[FILTERED]", "wiki"=>{"title"=>"bestpractice", "format"=>"md", "content"=>"todo", "message"=>"init"}, "namespace_id"=>"android", "project_id"=>"XXXProject"}
Encoding::CompatibilityError (incompatible character encodings: UTF-8 and ASCII-8BIT):
app/models/project_wiki.rb:92:in `create_page'
app/models/wiki_page.rb:179:in `save'
app/models/wiki_page.rb:139:in `create'
app/controllers/projects/wikis_controller.rb:60:in `create'
Completed 500 Internal Server Error in 98ms (Views: 12.1ms | ActiveRecord: 11.8ms)