Web application could not be started redmine3.4

Sir now i am getting different error Web application could not be started

Web application could not be started There was an error while trying to write to Gemfile.lock. It is likely that you need to allow write permissions for the file at path: /usr/share/redmine/Gemfile.lock (Bundler::InstallError) /usr/lib/ruby/vendor_ruby/bundler/definition.rb:235:in rescue in lock' /usr/lib/ruby/vendor_ruby/bundler/definition.rb:220:inlock’ /usr/lib/ruby/vendor_ruby/bundler/environment.rb:34:in lock' /usr/lib/ruby/vendor_ruby/bundler/runtime.rb:43:insetup’ /usr/lib/ruby/vendor_ruby/bundler.rb:120:in setup' /usr/lib/ruby/vendor_ruby/bundler/setup.rb:17:in’ /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire’ /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:245:in block in run_load_path_setup_code' /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:348:inrunning_bundler’ /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:243:in run_load_path_setup_code' /usr/share/passenger/helper-scripts/rack-preloader.rb:100:inpreload_app’ /usr/share/passenger/helper-scripts/rack-preloader.rb:158:in ' /usr/share/passenger/helper-scripts/rack-preloader.rb:29:inmodule:PhusionPassenger’ /usr/share/passenger/helper-scripts/rack-preloader.rb:28:in `’