Nodejs-dialogflow: TypeError: dialogflow.SessionsClient is not a constructor on glitch

[prashant7july]

Hi, I have facing the issue as below in https://glitch.com, How to resolve?

TypeError: dialogflow.SessionsClient is not a constructor
    at /app/server.js:29:25
    at Layer.handle [as handle_request] (/rbd/pnpm-volume/da59de95-5f29-48a0-8ac6-325d9ce14734/node_modules/.registry.npmjs.org/express/4.16.3/node_modules/express/lib/router/layer.js:95:5)
    at next (/rbd/pnpm-volume/da59de95-5f29-48a0-8ac6-325d9ce14734/node_modules/.registry.npmjs.org/express/4.16.3/node_modules/express/lib/router/route.js:137:13)
    at Route.dispatch (/rbd/pnpm-volume/da59de95-5f29-48a0-8ac6-325d9ce14734/node_modules/.registry.npmjs.org/express/4.16.3/node_modules/express/lib/router/route.js:112:3)
    at Layer.handle [as handle_request] (/rbd/pnpm-volume/da59de95-5f29-48a0-8ac6-325d9ce14734/node_modules/.registry.npmjs.org/express/4.16.3/node_modules/express/lib/router/layer.js:95:5)
    at /rbd/pnpm-volume/da59de95-5f29-48a0-8ac6-325d9ce14734/node_modules/.registry.npmjs.org/express/4.16.3/node_modules/express/lib/router/index.js:281:22
    at Function.process_params (/rbd/pnpm-volume/da59de95-5f29-48a0-8ac6-325d9ce14734/node_modules/.registry.npmjs.org/express/4.16.3/node_modules/express/lib/router/index.js:335:12)
    at next (/rbd/pnpm-volume/da59de95-5f29-48a0-8ac6-325d9ce14734/node_modules/.registry.npmjs.org/express/4.16.3/node_modules/express/lib/router/index.js:275:10)
    at SendStream.error (/rbd/pnpm-volume/da59de95-5f29-48a0-8ac6-325d9ce14734/node_modules/.registry.npmjs.org/serve-static/1.13.2/node_modules/serve-static/index.js:121:7)
    at emitOne (events.js:116:13)

[rdsimp]

Same issue in Runkit https://runkit.com

[JustinBeckwith]

Greetings! Can you share the exact code snippet you're trying to use? Is this running on the server, or in the browser?

[AlvarDev]

Hi @prashant7july, did you resolved the issue?
I resolved it changing the version of the lib version:

from "dialogflow": "^4.0.3" to "dialogflow": "0.6.0"

source: https://www.npmjs.com/package/dialogflow

let me know if it helps

[BlueSeph28]

Why this issue is closed? I have the same error with runkit

Code:

try {
const event = {
    call_sid: "12345678799",
    speech_result: "Hola",
}
    let projectId = "projectId"

        let privateKey = "privateKey"
        let clientEmail = "clientEmail"
        let config = {
            credentials: {
                private_key: privateKey,
                client_email: clientEmail
            }
        }

        let sessionClient = new dialogflow.SessionsClient(config)


        const sessionPath = sessionClient.sessionPath(projectId, event.call_sid);

        const request = {
            session: sessionPath,
            queryInput: {
                text: {
                    text: event.speech_result,
                    languageCode: LANGUAGE_CODE
                }
            }
        };
        console.log("sirve?");
        console.log(sessionClient.detectIntent(request));
        /*
            sessionClient.detectIntent(request).then(element => {
                console.log(element);
               callback(null, element); 
            })
            .catch(err => {
                console.log(err);
                callback(err);
            });*/
    }
    catch(err) {
        console.log(err);
    }

[JustinBeckwith]

This looks to be related to webpack type environments.

[alexander-fenster]

Hi @BlueSeph28,

What you see might be a RunKit bug. I reproduced it here: https://runkit.com/alexander-fenster/5e5d5d2e21b63e00141512ca#:

First, I tried to load another Google Cloud library (@google-cloud/speech), and it worked (at least it created a client properly).

Then, for dialogflow, weird stuff happens: for some reason, it shows the version as 4.0.3 (which is totally wrong, this package is currently at 1.2.0). Seems like for whatever reason it actually picks https://www.npmjs.com/package/apiai instead (which is _really_ old).

So, I would advice that you contact RunKit support and figure out why the wrong package gets imported.

Good news! We are planning to publish the next Dialogflow library version as @google-cloud/dialogflow (rather than just dialogflow), and it will _probably_ fix this weird bug.

[Mohini0104]

@google-cloud/dialogflow didn't help me in my scenario , whereas only dialogflow worked out in a better way

[Mohini0104]

An error message "sessionClient.projectAgentSessionPath is not a function
at runSample" like this is coming up on my console and i'm trying to resolve it but unable to do so. Please kindly help.

[sumitsoni516]

An error message "sessionClient.projectAgentSessionPath is not a function
at runSample" like this is coming up on my console and i'm trying to resolve it but unable to do so. Please kindly help.

@Mohini0104
change this "sessionClient.projectAgentSessionPath " to "sessionClient.sessionPath" . not Session its session ok.
and also change the directories "\" to "/".

[sumitsoni516]

@google-cloud/dialogflow didn't help me in my scenario , whereas only dialogflow worked out in a better way

remove @google-cloud and be it remain 'dialogflow'

[groverHarshit]

Try removing dialogflow and reinstalling

npm uninstall dialogflow

npm install --save dialogflow

Mine worked this way

[telpirion]

It looks like there is a workaround for this issue, so I'm going to close it. Please feel free to re-open this issue with more information.

[eGlobeBizCom]

Subject: Firebase Functions Dashboard shows this error message: " TypeError: dialogflow.SessionsClient is not a constructor" in 2021

Hi All

Our Firebase Functions web apps connected with Dialogflow platform API had worked correctly from 2017 till June/2021; Then, we updated the following libraries with our code package in July/2021; Then, our input on our web apps cannot be passed to our chatbot on Dialogflow; We found the above Error Message inside Firebase Functions Dashboard; We have done the following work to solve this issue, but the above issue cannot be fixed;

• The following line of code in our Index.js had worked before this code package is updated to the latest Firebase Functions libraries released after Jan/ 2021; Now the following code generated the above Error Message

============
     // Create a new session
     const sessionClient = new dialogflow.SessionsClient();
     const sessionPath = sessionClient.sessionPath(projectId, sessionId);
==============

*This code package is updated with these libraries yesterday and this code package generated the above Error Message:

==========
   [email protected]
    [email protected]
   + [email protected]
+ [email protected]
+ [email protected]
+ @google-cloud/[email protected]
=============

*We tried to find the causes and solution for the above error over the web and the related help forums, here are what we found so far:
https://pipedream.com/apps/google-dialogflow
https://github.com/googleapis/nodejs-dialogflow/issues/288
https://github.com/googleapis/nodejs-dialogflow/issues/127
We tried several suggestions in the above posts and none worked.

*Any suggestions and help will be highly appreciated for the above urgent Error Message!!