我在尝试合并两个用户账户时遇到了错误。
我的 SSO 提供商曾返回不同的 ID，导致少数用户出现了重复账户。
SSO 问题现已修复，我正在尝试合并这些重复账户。
但在执行管理员合并功能时，系统弹出一个错误提示框，日志中显示了以下内容。账户并未被合并。
错误日志
消息（报告了 2 份副本）
NoMethodError（nil:NilClass 未定义方法 `email'）
app/models/user.rb:1243:in `email'
app/services/user_merger.rb:8:in `initialize'
app/controllers/admin/users_controller.rb:507:in `new'
app/controllers/admin/users_controller.rb:507:in `merge'
app/controllers/application_controller.rb:358:in `block in with_resolved_locale'
app/controllers/application_controller.rb:358:in `with_resolved_locale'
lib/middleware/omniauth_bypass_middleware.rb:68:in `call'
lib/content_security_policy/middleware.rb:12:in `call'
lib/middleware/anonymous_cache.rb:354:in `call'
config/initializers/100-quiet_logger.rb:23:in `call'
config/initializers/100-silence_logger.rb:31:in `call'
lib/middleware/enforce_hostname.rb:22:in `call'
lib/middleware/request_tracker.rb:176:in `call'
回溯
app/models/user.rb:1243:in `email'
app/services/user_merger.rb:8:in `initialize'
app/controllers/admin/users_controller.rb:507:in `new'
app/controllers/admin/users_controller.rb:507:in `merge'
actionpack (6.0.3.3) lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action'
actionpack (6.0.3.3) lib/abstract_controller/base.rb:195:in `process_action'
actionpack (6.0.3.3) lib/action_controller/metal/rendering.rb:30:in `process_action'
actionpack (6.0.3.3) lib/abstract_controller/callbacks.rb:42:in `block in process_action'
activesupport (6.0.3.3) lib/active_support/callbacks.rb:112:in `block in run_callbacks'
app/controllers/application_controller.rb:358:in `block in with_resolved_locale'
环境
HTTP 主机：discourse.camra.org.uk