First time learning Flask and I am trying to build things following a tutorial. I am getting this message in my browser when I input this url:

Internal Server Error The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.

my run.py

from flaskblog1 import app

if name == 'main': app.run(debug=True)

routes.py

import os import secrets from PIL import Image from flask import render_template, url_for, flash, redirect, request, abort from flaskblog1 import app, db, bcrypt from flaskblog1.forms import RegistrationForm, LoginForm, UpdateAccountForm, PostForm from flaskblog1.models import User, Post from flask_login import login_user, current_user, logout_user, login_required

@app.route("/") @app.route("/home") def home(): posts = Post.query.all() return render_template('home.html', posts=posts)

@app.route("/about") def about(): return render_template('about.html', title='About')

@app.route("/register", methods=['GET', 'POST']) def register(): if current_user.is_authenticated: return redirect(url_for('home')) form = RegistrationForm() if form.validate_on_submit(): hashed_password = bcrypt.generate_password_hash(form.password.data).decode('utf-8') user = User(username=form.username.data, email=form.email.data, password=hashed_password) db.session.add(user) db.session.commit() flash('Your account has been created! You are now able to log in', 'success') return redirect(url_for('login')) return render_template('register.html', title='Register', form=form)

@app.route("/login", methods=['GET', 'POST']) def login(): if current_user.is_authenticated: return redirect(url_for('home')) form = LoginForm() if form.validate_on_submit(): user = User.query.filter_by(email=form.email.data).first() if user and bcrypt.check_password_hash(user.password, form.password.data): login_user(user, remember=form.remember.data) next_page = request.args.get('next') return redirect(next_page) if next_page else redirect(url_for('home')) else: flash('Login Unsuccessful. Please check email and password', 'danger') return render_template('login.html', title='Login', form=form)

@app.route("/logout") def logout(): logout_user() return redirect(url_for('home'))

def save_picture(form_picture): random_hex = secrets.token_hex(8) _, f_ext = os.path.splitext(form_picture.filename) picture_fn = random_hex + f_ext picture_path = os.path.join(app.root_path, 'static/profile_pics', picture_fn)

output_size = (125, 125)
i = Image.open(form_picture)
i.thumbnail(output_size)
i.save(picture_path)

return picture_fn

@app.route("/account", methods=['GET', 'POST']) @login_required def account(): form = UpdateAccountForm() if form.validate_on_submit(): if form.picture.data: picture_file = save_picture(form.picture.data) current_user.image_file = picture_file current_user.username = form.username.data current_user.email = form.email.data db.session.commit() flash('Your account has been updated!', 'success') return redirect(url_for('account')) elif request.method == 'GET': form.username.data = current_user.username form.email.data = current_user.email image_file = url_for('static', filename='profile_pics/' + current_user.image_file) return render_template('account.html', title='Account', image_file=image_file, form=form)

@app.route("/post/new", methods=['GET', 'POST']) @login_required def new_post(): form = PostForm() if form.validate_on_submit(): post = Post(title=form.title.data, content=form.content.data, author=current_user) db.session.add(post) db.session.commit() flash('Your post has been created!', 'success') return redirect(url_for('home')) return render_template('create_post.html', title='New Post', form=form, legend='New Post')

@app.route("/post/<int:post_id>") def post(post_id): post = Post.query.get_or_404(post_id) return render_template('post.html', title=post.title, post=post)

@app.route("/post/<int:post_id>/update", methods=['GET', 'POST']) @login_required def update_post(post_id): post = Post.query.get_or_404(post_id) if post.author != current_user: abort(403) form = PostForm() if form.validate_on_submit(): post.title = form.title.data post.content = form.content.data db.session.commit() flash('Your post has been updated!', 'success') return redirect(url_for('post', post_id=post.id)) elif request.method == 'GET': form.title.data = post.title form.content.data = post.content return render_template('create_post.html', title='Update Post', form=form, legend='Update Post')

@app.route("/post/<int:post_id>/delete", methods=['POST']) @login_required def delete_post(post_id): post = Post.query.get_or_404(post_id) if post.author != current_user: abort(403) db.session.delete(post) db.session.commit() flash('Your post has been deleted!', 'success') return redirect(url_for('home'))

Look in your error and server logs for tracebacks that you can use to start debugging your issue.