# Zoom meeting sample javascript giving error **URL:** \ **Category:** Web\ **Created:** [June 1, 2023, 2:23pm UTC](https://devforum.zoom.us/t/zoom-meeting-sample-javascript-giving-error/89473 "2023-06-01T14:23:18Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![zoomema2020](https://avatars.discourse-cdn.com/v4/letter/z/35a633/32.png) [@zoomema2020](https://devforum.zoom.us/u/zoomema2020)\ **Post date:** [June 1, 2023, 2:23pm UTC](https://devforum.zoom.us/t/zoom-meeting-sample-javascript-giving-error/89473/1 "2023-06-01T14:23:18Z")
API ENDPOINT _[GitHub - zoom/meetingsdk-javascript-sample: Use the Zoom Meeting SDK in (vanilla) JavaScript](https://github.com/zoom/meetingsdk-sample-javascript)_ DESCRIPTION I want to make use of meeting sdk at [[GitHub - zoom\_meetingsdk-javascript-sample Use the Zoom Meeting SDK in (vanilla) JavaScript]] for my zoom web meetings but I have not been able to obtain the json ``` return response.json() ``` in the client-view.js. it is giving me the error message ’ > SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data’lock which from further investigation I discovered that the response was empty. I have provided the appropriate accurate meeting number as available in zoom and used both 1 and 0 for role but the result is the same Please how do I get it to run effectively. I am still running it inside my local system with localhost here is my part of the code which I modified in the client-view ``` var authEndpoint = '' var sdkKey = 'my client id' var meetingNumber = 'meeting number on zoom' var passWord = 'password on zoom' var role = 0 var userName = 'any user name' var userEmail = 'mymail@email.com' var registrantToken = '' var zakToken = '' var leaveUrl = 'http://localhost:800' ``` I am using php Cc @elisa.zoom, @donte.zoom, ---
**Author:** ![j.schoenemeyer](https://avatars.discourse-cdn.com/v4/letter/j/f9ae1b/32.png) [@j.schoenemeyer](https://devforum.zoom.us/u/j.schoenemeyer)\ **Post date:** [June 1, 2023, 8:28pm UTC](https://devforum.zoom.us/t/zoom-meeting-sample-javascript-giving-error/89473/2 "2023-06-01T20:28:10Z")
do you have a server backend (-\> authEndpoint) to create the signature? if not - you should try first the other example (CDN version - pure JS without backend) > **[GitHub - zoom/meetingsdk-web-sample: Zoom Meeting SDK web sample](https://github.com/zoom/meetingsdk-web-sample)** > > Zoom Meeting SDK web sample. Contribute to zoom/meetingsdk-web-sample development by creating an account on GitHub. the CDN version is ready to use within few simple steps ```auto CDN/js/index.js:20 var CLIENT_ID = "YOUR_CLIENT_ID_OR_SDK_KEY"; CDN/js/index.js:26 var CLIENT_SECRET = "YOUR_CLIENT_SECRET_OR_SDK_SECRET; CDN/js/index.js:112 ... "/meeting.html?"; // replace '/' with './' ``` ---
**Author:** ![zoomema2020](https://avatars.discourse-cdn.com/v4/letter/z/35a633/32.png) [@zoomema2020](https://devforum.zoom.us/u/zoomema2020)\ **Post date:** [June 2, 2023, 4:31am UTC](https://devforum.zoom.us/t/zoom-meeting-sample-javascript-giving-error/89473/3 "2023-06-02T04:31:14Z")
@ [j.schoenemeyer](https://devforum.zoom.us/u/j.schoenemeyer) Thank you very much for the reply. But what can I do to get authEndPoint signature in my php backend. What should I do, how can I create it? ---
**Author:** ![j.schoenemeyer](https://avatars.discourse-cdn.com/v4/letter/j/f9ae1b/32.png) [@j.schoenemeyer](https://devforum.zoom.us/u/j.schoenemeyer)\ **Post date:** [June 2, 2023, 4:44am UTC](https://devforum.zoom.us/t/zoom-meeting-sample-javascript-giving-error/89473/4 "2023-06-02T04:44:20Z")
have a look - at the end is a working php function for creating the signature > [@Client SDK Invalid Signature errorCode:200 PHP](https://devforum.zoom.us/t/client-sdk-invalid-signature-errorcode-200-php/85056): > > Hello Everybody Description I need to update a JWT app to SDK meetings app before deprecation. I did create a new SDK app from Marketplace and I got a new Client Id and Client secret to use. Following the instructions on: [https://marketplace.zoom.us/docs/guides/build/jwt-app/jwt-app-migration/](https://marketplace.zoom.us/docs/guides/build/jwt-app/jwt-app-migration/) I replaced api key and secret with the new Client id and Client secret and updated signature generation with the new keys. I tested the new credentials with the sample app zoom-sdk-web-2.10.1, whic… ---
**Author:** ![zoomema2020](https://avatars.discourse-cdn.com/v4/letter/z/35a633/32.png) [@zoomema2020](https://devforum.zoom.us/u/zoomema2020)\ **Post date:** [June 2, 2023, 2:23pm UTC](https://devforum.zoom.us/t/zoom-meeting-sample-javascript-giving-error/89473/5 "2023-06-02T14:23:35Z")
@j.schoenemeyer Thanks for the response. I was able to get it to produce signature but it is now giving an error > Object { method: “join”, status: false, result: “Invalid signature.”, errorMessage: “Signature is invalid.”, errorCode: 3712 } the php code I used to produce the signature is ```auto $header = array( 'alg' => 'HS256', //alg is required 'typ' => 'JWT' ); date_default_timezone_set("UTC"); $time = time() - 30; $exp = $time + 3600 * 2; $sdk_key = env('ZOOM_CLIENT_ID'); // your sdk $sdk_secret = env('ZOOM_CLIENT_SECRET'); // your secret $payload = array( 'sdkKey' => $sdk_key, 'mn' => $meeting_id, // meeting number 'role' => 0, 'iat' => $time, 'exp' => $exp, 'appKey' => $sdk_key, 'tokenExp' => $exp, ); $key = $sdk_secret; $jws = new \Gamegos\JWS\JWS(); // ENCODE $jwsStr = $jws->encode($header, $payload, $key); $data = array ( 'signature' => $jwsStr ); ``` And i put the signature i.e. `$data.signature` where signature is required alongside all the other fields in the javasript file and it produced the error stated earlier. Please how can i solve this problem ---
**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\ **Post date:** [July 3, 2023, 12:24am UTC](https://devforum.zoom.us/t/zoom-meeting-sample-javascript-giving-error/89473/6 "2023-07-03T00:24:13Z")
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