服务器内部错误是什么意思

from flask import Flask

app = Flask(__name__)

@app.route('/error')
def error():
    return 1 / 0  # 这里会引发一个除零错误

if __name__ == '__main__':
    app.run(debug=True)

 * Serving Flask app "app" (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: on
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 123-456-789
127.0.0.1 - - [22/Jan/2024 12:34:56] "GET /error HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/path/to/flask/app.py", line 2463, in __call__
    return self.wsgi_app(environ, start_response)
  File "/path/to/flask/app.py", line 2439, in wsgi_app
    response = self.handle_exception(e)
  File "/path/to/flask/app.py", line 1866, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/path/to/flask/app.py", line 2436, in wsgi_app
    response = self.full_dispatch_request()
  File "/path/to/flask/app.py", line 1850, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/path/to/flask/app.py", line 1721, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/path/to/flask/app.py", line 1844, in full_dispatch_request
    rv = self.dispatch_request()
  File "/path/to/flask/app.py", line 1796, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "app.py", line 8, in error
    return 1 / 0
ZeroDivisionError: division by zero