When using QHttpMultiPart, why does sending files cause it to freeze?

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There could be several reasons for QHttpMultiPart to freeze while sending files. Some possible causes include:

1. Large file sizes: If the files being sent are very large, it may take a long time for the server to process them, leading to temporary freezes in the application.

2. Slow internet connection: A slow internet connection can cause delays in sending files, which can lead to temporary freezes in the application.

3. Network congestion: If there is a lot of network traffic, the server may experience delays in processing requests, which can also cause temporary freezes.

4. Bugs in the code: If there are errors or other bugs in the code, they can cause QHttpMultiPart to crash or freeze.

To debug the issue, you can try optimizing the file size or checking the internet connection. You can also check the code for bugs and ensure that it is properly handling errors and timeouts. Additionally, you may want to consider using a different library or approach for sending files if the issue persists.