@MartinSahlen Based on the logs, there is response payload. However, the function seems continue running, can't finish execute until encounter "connection error". Thus, can't get the response from the functions URL.

from cloudfn.flask_handler import handle_http_event
from flask import Flask, request, Response
app = Flask('the-function')
@app.route('/run', methods=['GET'])
def testrun():
return Response(str(123456), mimetype='text/plain')
handle_http_event(app)