光阴似箭催人老，日月如移越少年。
Try changing the startup mode to debug where the flask app is started.
app.run(debug=True)
You can print out the error reason.
Why should you use livereload？Flask自带reload机制的，修改代码以后保存就会reload。所以你直接app.run()?
livereload
app.run()
f.save(path.join(upload_path, secure_filename(f.filename))) # Compare the difference between my code and the corresponding code there, thank you!
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Try changing the startup mode to debug where the flask app is started.
app.run(debug=True)You can print out the error reason.
Why should you use
livereload？Flask自带reload机制的，修改代码以后保存就会reload。所以你直接app.run()?f.save(path.join(upload_path, secure_filename(f.filename)))
# Compare the difference between my code and the corresponding code there, thank you!