使用Microsoft Graph API（v1）将新事件推送到Outlook日历时，我无法调试此问题。我已经测试过了，它仍然可以工作，但是我收到了这个错误，今天在我的Ruby on Rails应用程序中发生了几次，下面的代码片段中提到了gems。并且在这些错误之后有重复的事件添加到日历中。我已经搜索了这个问题，但仍然一无所获。谁能帮我解决这个问题？我只是不知道这个问题是由我的用户的行为引起的，还是仅仅是API服务器错误。非常感谢！
OData：：ServerError 503 ConcurrentItemSave：“将数据保存到存储区时发生冲突（保存结果：IrresolvableConflict，属性：）。请重试请求。”来自“https://graph.microsoft.com/v1.0/me/calendars/AAMkADg1YmMzNjE2LTM5Y2MtNGI2NC05NjJjLWRiY2RhZTZkNDRkMABGAAAAAADZc5aq6QclSqy_4oRMVv_EBwB4ZnW6S6xLTZDSXIsgJfprAAAAAAEGAAB4ZnW6S6xLTZDSXIsgJfprAAAGEcjmAAA=/events“
我用来通过API创建事件的代码

require 'adal'
require 'microsoft_graph'

username      = ENV["OUTLOOK_USERNAME"]
password      = ENV["OUTLOOK_PASSWORD"]
client_id     = ENV["OUTLOOK_CLIENT_ID"]
client_secret = ENV["OUTLOOK_CLIENT_SECRET"]
tenant        = ENV["OUTLOOK_TENANT"]
user_cred     = ADAL::UserCredential.new(username, password)
client_cred   = ADAL::ClientCredential.new(client_id, client_secret)
context       = ADAL::AuthenticationContext.new(ADAL::Authority::WORLD_WIDE_AUTHORITY, tenant)
resource      = "https://graph.microsoft.com/"
tokens        = context.acquire_token_for_user(resource, client_cred, user_cred)

callback = Proc.new { |r|
  r.headers["Authorization"] = "Bearer #{tokens.access_token}"
  r.headers["Prefer"] = 'outlook.timezone="Australia/Sydney"'
  r.headers['Content-type'] = 'application/json'
}

@graph = MicrosoftGraph.new(
  base_url: "https://graph.microsoft.com/v1.0",
  cached_metadata_file: File.join(MicrosoftGraph::CACHED_METADATA_DIRECTORY, "metadata_v1.0.xml"),
  &callback
)

#example_data
calendar_id = "my_calendar_id"
data = my_event_object

@graph.service.post("me/calendars/#{calendar_id}/events", data.to_json)

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