当我将ruby 2.5.3更新到2.6.0并尝试运行RSpec规范时，它将引发policy already configured错误

错误堆栈如下

An error occurred while loading ./spec/controllers/example_controller_spec.rb.
Failure/Error: require File.expand_path("../../config/environment",__FILE__)

SecureHeaders::Configuration::AlreadyConfiguredError:
  Policy already configured
# /Users/codecpm/.rvm/gems/ruby-2.6.0/gems/secure_headers-6.1.1/lib/secure_headers/configuration.rb:19:in `default'
# ./config/initializers/secure_header.rb:1:in `<top (required)>'

但是服务器运行正常。

以前有人遇到过这个问题吗？