Cannot Read Context in Dialogflow Fulfillment (Suddenly Undefined)

Question

We built a Dialogflow agent using google cloud functions as webhook which worked properly until yesterday evening. At that time I exported the agent and reimported it later

Answer 1

Actually I could fix it by the following 'magic' steps:

• Copied my original function to a text file
• Copy and pasted the original example code into the GUI fulfillment code editor (Code on GitHub)
• Deployed the function
• Created a minimal example for my info function:

function info(agent) {
    store_context = agent.context.get('info_dialog_params_store');
}

• Tested it, and it worked
• Copied back my original code
• Everything was fine again

Answer 2

I had the same issue, I resolved it updating dialogflow-fulfillment in package.json:

from "dialogflow-fulfillment": "^0.5.0" to "dialogflow-fulfillment": "^0.6.0"

Answer 3

I solved the problem by turning off "Beta features" enter image description here