revert: Gunicorn didn't help, back to Flask dev server

site/app.py

@@ -4,7 +4,7 @@ from flask import Flask, render_template, request
 
 app = Flask(__name__)
 
-VERSION = '1.0.8'
+VERSION = '1.0.7'
 
 
 @app.route('/')
@@ -48,28 +48,4 @@ def upload():
 
 
 if __name__ == '__main__':
-    import gunicorn.app.base
-
-    class StandaloneApp(gunicorn.app.base.BaseApplication):
-        def __init__(self, app, options=None):
-            self.application = app
-            self.options = options or {}
-            super().__init__()
-
-        def load_config(self):
-            for k, v in self.options.items():
-                self.cfg.set(k, v)
-
-        def load(self):
-            return self.application
-
-    StandaloneApp(app, {
-        'bind': '0.0.0.0:5000',
-        'workers': 2,
-        'timeout': 300,
-        'worker_class': 'sync',
-        'keepalive': 5,
-        'limit_request_field_size': 0,
-        'limit_request_line': 0,
-        'limit_request_fields': 0,
-    }).run()
+    app.run(host='0.0.0.0', port=5000, debug=False, threaded=True)