How to handle file uploads in Flask with large files using Flask-WTF?
I'm having trouble with I've been working on this all day and I just started working with Hey everyone, I'm running into an issue that's driving me crazy. I'm currently working on a Flask application where I need to allow users to upload files. I'm using Flask-WTF for form handling, but I'm running into issues when trying to upload large files. The file upload works fine for small files, but when I try to upload a file larger than 16MB, I get a `413 Request Entity Too Large` behavior. I've checked the documentation and it seems like the default limit for uploads is set to 16MB in Flask. I attempted to increase the limit by adding the following line to my Flask app configuration: ```python app.config['MAX_CONTENT_LENGTH'] = 32 * 1024 * 1024 # 32MB ``` However, after setting this, I still encounter the same behavior message when uploading large files. I also tried using Flask-Uploads, but it seems unnecessary for my use case since I just want to handle file uploads via forms. Here's a snippet of my form code: ```python class UploadForm(FlaskForm): file = FileField('Upload File', validators=[FileRequired()]) submit = SubmitField('Upload') ``` And in my view function, I'm handling the file upload like this: ```python @app.route('/upload', methods=['GET', 'POST']) def upload(): form = UploadForm() if form.validate_on_submit(): file = form.file.data # Process the file here return redirect(url_for('success')) return render_template('upload.html', form=form) ``` I ensured that my Nginx configuration is also allowing larger file uploads by setting `client_max_body_size` in my server block: ```nginx server { client_max_body_size 32M; } ``` Despite these changes, I need to seem to resolve the scenario. Is there something I'm missing or misconfigured? Any help would be greatly appreciated! This is part of a larger web app I'm building. The stack includes Python and several other technologies. Has anyone dealt with something similar? Am I approaching this the right way? I've been using Python for about a year now. Any examples would be super helpful. I'd love to hear your thoughts on this. Has anyone else encountered this?