报错信息：Blocking Cross Origin API request for /api/sessions. Origin: http://124.221.129.224, Host: 124.221.129.224:8888 [W 2023-07-12 02:18:29.406 ServerApp] wrote error: 'Not Found' [W 2023-07-12 02:18:29.406 ServerApp] 404 POST /api/sessions?1689128308694 (124.221.129.224) 1.46ms referer=http://124.221.129.224/lab/tree/home/my_python_file/Untitled.ipynb [W 2023-07-12 02:18:32.110 LabApp] Blocking Cross Origin API request for /lab/api/workspaces/default. Origin: http://124.221.129.224, Host: 124.221.129.224:8888 [W 2023-07-12 02:18:32.111 LabApp] wrote error: 'Not Found' [W 2023-07-12 02:18:32.111 LabApp] 404 PUT /lab/api/workspaces/default?1689128311398 (124.221.129.224) 1.43ms referer=http://124.221.129.224/lab/tree/home/my_python_file/Untitled.ipynb

这些错误信息表明在你的应用程序中发生了一些跨域请求的问题。"Not Found" 错误表明请求的资源未找到。

在第一条错误信息中，你尝试进行一个 POST 请求到 `/api/sessions` 接口，但该请求被阻止了。类似地，在第二条错误信息中，你尝试进行一个 PUT 请求到 `/lab/api/workspaces/default` 接口，也被阻止了。

这些错误通常发生在浏览器中，当你的应用程序运行在一个域名（Origin）下，但尝试访问另一个域名下的资源时，浏览器会阻止这种跨域请求。这是出于安全考虑，以防止恶意的脚本访问其他域名下的数据。

要解决这个问题，你可以使用一些跨域请求的解决方案，例如在服务器端设置 CORS 头部来允许跨域请求，或者使用代理服务器来转发请求。你还可以检查请求的路径是否正确，并确保所请求的资源存在于服务器上。

如果你具体需要什么帮助或者有其他问题，请提供更多的上下文信息，我会尽力帮助你解决问题。

相关问题

Python 连接rabbitmq失败，报错信息如下：File "/home/kejia/Server/tf/Bin_x64/DeepLearning/DL_Lib_02/pika/adapters/blocking_connection.py", line 360, in __init__ self._impl = self._create_connection(parameters, _impl_class) File "/home/kejia/Server/tf/Bin_x64/DeepLearning/DL_Lib_02/pika/adapters/blocking_connection.py", line 451, in _create_connection raise self._reap_last_connection_workflow_error(error) pika.exceptions.ProbableAccessDeniedError: ConnectionClosedByBroker: (541) "INTERNAL_ERROR - access to vhost '/' refused for user 'kejia': vhost '/' is down" 连接接收MQ [queue.position.inspection111] 错误: ('ConnectionClosedByBroker: (541) "INTERNAL_ERROR - access to vhost \'/\' refused for user \'kejia\': vhost \'/\' is down"',)

根据报错信息，您遇到了连接 RabbitMQ 失败的问题，错误提示是 "INTERNAL_ERROR - access to vhost '/' refused for user 'kejia': vhost '/' is down"。这个错误是由于访问根虚拟主机（vhost）时被拒绝导致的。

这个错误可能有以下几种原因和解决方法：

1. 虚拟主机（vhost）不存在或者已经关闭。请确保您正在连接的虚拟主机（vhost）存在且处于运行状态。您可以在 RabbitMQ 的管理界面中检查虚拟主机状态。

2. 用户名或密码错误。请确保您使用正确的用户名和密码进行连接。如果您不确定用户名和密码是否正确，可以尝试在 RabbitMQ 的管理界面中重新设置密码或创建新用户。

3. 防火墙或网络问题。请确保您的网络连接正常，没有被防火墙阻止。尝试禁用防火墙或调整防火墙规则，以允许与 RabbitMQ 的通信。

4. RabbitMQ 服务不可用或出现故障。请确保 RabbitMQ 服务正在运行，并且没有出现任何错误或故障。您可以检查 RabbitMQ 服务的日志文件，以获取更多关于服务状态的信息。

综上所述，您可以按照上述解决方法逐一排查，找出导致连接失败的具体原因，并进行相应的修复。

fatal: unable to access 'https://github.com/rogersce/cnpy.git/': Failed to connect to github.com port 443 after 21096 ms: Timed out

This error message indicates that the Git client was unable to connect to the GitHub server at the specified URL. The error "Failed to connect to github.com port 443" suggests that the connection was blocked or refused by the server, possibly due to a network issue or a firewall blocking the connection. The "Timed out after 21096 ms" message implies that the connection attempt took too long and the server timed out waiting for a response.

To fix this issue, you can try the following:

1. Check your internet connection: Ensure that your internet connection is stable and working properly.

2. Check your firewall settings: If you have a firewall enabled, make sure that it is not blocking the connection to GitHub. You may need to add an exception for Git in your firewall settings.

3. Try a different network: If the issue persists, try connecting from a different network, such as a different Wi-Fi network or a cellular data network.

4. Check if GitHub is down: Sometimes, GitHub may experience downtime or maintenance, causing connection issues. You can check the GitHub status page to see if there are any reported issues.

5. Use SSH instead of HTTPS: If you continue to have trouble connecting via HTTPS, you can try using SSH instead. You'll need to generate an SSH key and add it to your GitHub account. Then, you can use the SSH URL instead of the HTTPS URL to clone the repository.