error

app.yaml

@@ -1,5 +1,10 @@
 runtime: python37
 
+instance_class: F4_1G
+entrypoint: gunicorn -b :$PORT main:app
+env: flex
+threadsafe: yes
+
 handlers:
   # This configures Google App Engine to serve the files in the app's static
   # directory.
@@ -11,4 +16,4 @@ handlers:
   # the entire handlers section) when there are no static files defined.
 - url: /.*
   script: auto
-  instance_class: F4
+

main.py

@@ -32,6 +32,14 @@ def root():
     # For the sake of example, use static information to inflate the template.
     # This will be replaced with real information in later steps.
     return render_template('index.html')
+    
+@app.errorhandler(500)
+def server_error(e):
+    logging.exception('An error occurred during a request.')
+    return """
+    An internal error occurred: <pre>{}</pre>
+    See logs for full stacktrace.
+    """.format(e), 500
 
 
 @app.route('/generate', methods=['POST'])

requirements.txt

@@ -1,5 +1,5 @@
 regex==2017.4.5
 numpy
-tensorflow
+tensorflow==1.13.1
 flask
-
+gunicorn==19.7.1