安装后，ThingWorx Flow 登录页面无法加载，并显示“502 Bad Gateway”或“504 Gateway Timeout”错误。

• 无法访问 ThingWorx Flow 主页
• ThingWorx Flow 模块已上线，但登录尝试返回502 Bad Gateway nginx
• 在浏览器中使用F12 / 开发者工具显示，当前用户API 调用返回以下错误：

 Failed to load resource: the server responded with a status of 504 (Gateway Timeout) - HTTP 504 Gateway Timeout

• 登录窗口不弹出
• 使用自签名证书时，ThingWorx Flow 无法访问。
• 在 Web 浏览器中使用F12 / 开发者工具显示fetchconfig返回状态502
• 尝试访问登录页面时出现504 Gateway timeout
• trigger_error-xxxx.log文件包含以下错误：

   {"module":"flow-trigger","timestamp":"YYYY-MM-DDThh:mm:ss.965Z","level":"error","message":"Error deleting from message table"} {"module":"flow-trigger","timestamp":"YYYY-MM-DDThh:mm:ss.965Z","level":"error","message":"Login failed for user &#39;<user_name>&#39;."} {"module":"flow-trigger","timestamp":"YYYY-MM-DDThh:mm:ss.965Z","level":"error","message":"Error: Login failed for user &#39;<user_name>&#39;. at Login7TokenHandler.onErrorMessage (D:\\ThingWorxFlow\\modules\\trigger\\node_modules\\tedious\\lib\\token\\handler.js:239:19) at Readable.&lt;anonymous&gt; (D:\\ThingWorxFlow\\modules\\trigger\\node_modules\\tedious\\lib\\token\\token-stream-parser.js:26:33) at Readable.emit (events.js:315:20) at addChunk (internal/streams/readable.js:309:12) at readableAddChunk (internal/streams/readable.js:284:9) at Readable.push (internal/streams/readable.js:223:10) at next (internal/streams/from.js:88:29) at runMicrotasks (&lt;anonymous&gt;) at processTicksAndRejections (internal/process/task_queues.js:93:5)"} {"module":"flow-trigger","timestamp":"YYYY-MM-DDThh:mm:ss.966Z","level":"error","message":"Error updating subscriptions"} {"module":"flow-trigger","timestamp":"YYYY-MM-DDThh:mm:ss.966Z","level":"error","message":"Login failed for user &#39;<user_name>&#39;."} {"module":"flow-trigger","timestamp":"YYYY-MM-DDThh:mm:ss.966Z","level":"error","message":"Error: Login failed for user &#39;<user_name>&#39;. at Login7TokenHandler.onErrorMessage (D:\\ThingWorxFlow\\modules\\trigger\\node_modules\\tedious\\lib\\token\\handler.js:239:19) at Readable.&lt;anonymous&gt; (D:\\ThingWorxFlow\\modules\\trigger\\node_modules\\tedious\\lib\\token\\token-stream-parser.js:26:33) at Readable.emit (events.js:315:20) at addChunk (internal/streams/readable.js:309:12) at readableAddChunk (internal/streams/readable.js:284:9) at Readable.push (internal/streams/readable.js:223:10) at next (internal/streams/from.js:88:29) at runMicrotasks (&lt;anonymous&gt;) at processTicksAndRejections (internal/process/task_queues.js:93:5)"}

• 可以通过 Flow 的主机名和 URL 访问 ThingWorx Flow，但无法通过 ThingWorx Composer 的 URL（在ThingWorx Composer > Flow > Connector中）访问，并出现以下错误：

404 page not found error

• 从“系统”&