当我点击注册和其他几个页面时，如果我登录，我得到内部错误消息页面。管理员内部错误， - 如果我登录帐户并转到处理帐户的某些页面，则不显示样式表。它们确实在项目中正确显示，
有关从何处开始研究此问题的任何想法？迷失在哪里开始这个。
内部错误 您尝试访问的页面上发生错误。 如果您仍然遇到问题，请与Redmine管理员联系以获取帮助。
如果您是Redmine管理员，请检查日志文件以获取有关错误的详细信息。
日志文件的位置在哪里？
我使用apache在Red Hat 7.4上
稍微进行一些研究，似乎与进入与账户信息相关的任何事情有关，特别是这两个方面： http://xxxredmine/my/account http://xxxredmine/admin
我发现了以下错误消息：
App 7394 stderr: Started GET "/projects" for 10.114.25.10 at 2018-05-02 14:53:55 -0400
App 7394 stderr: Processing by ProjectsController#index as HTML
App 7394 stderr: Current user: anonymous
App 7394 stderr: Rendered projects/index.html.erb within layouts/base (4.2ms)
App 7394 stderr: Completed 200 OK in 19ms (Views: 11.7ms | ActiveRecord: 2.9ms)
App 7394 stderr: Started GET "/account/register" for 10.114.25.10 at 2018-05-02 14:54:00 -0400
App 7394 stderr: Processing by AccountController#register as HTML
App 7394 stderr: Current user: anonymous
App 7394 stderr: Rendered account/register.html.erb within layouts/base (4.7ms)
App 7394 stderr: Completed 500 Internal Server Error in 8ms (ActiveRecord: 0.6ms)
App 7394 stderr:
App 7394 stderr: ActionView::Template::Error (Permission denied @ dir_s_mkdir - /var/www/redmine/tmp/cache/E6F):
App 7394 stderr: 22:
App 7394 stderr: 23:
App 7394 stderr: 24: <% unless @user.force_default_language? %>
App 7394 stderr: 25: <p><%= f.select :language, lang_options_for_select %></p>
App 7394 stderr: 26: <% end %>
App 7394 stderr: 27:
App 7394 stderr: 28: <% if Setting.openid? %>
App 7394 stderr: lib/redmine/i18n.rb:125:in `languages_options'
App 7394 stderr: app/helpers/application_helper.rb:1180:in `lang_options_for_select'
App 7394 stderr: app/views/account/register.html.erb:25:in `block in _app_views_account_register_html_erb__4280574302093872533_47282631967020'
App 7394 stderr: app/helpers/application_helper.rb:1190:in `labelled_form_for'
App 7394 stderr: app/views/account/register.html.erb:3:in `_app_views_account_register_html_erb__4280574302093872533_47282631967020'
App 7394 stderr: lib/redmine/sudo_mode.rb:63:in `sudo_mode'
App 7394 stderr:
App 7394 stderr: