I try to use laravel echo in an application in flutter, I send message to message event , but it does not appear in the project. What is the solution? - flutter

I try to use laravel echo so I apply it I am supposed to work
knowing that I try to send a massdge to the internet it appears in blade that it is working but the application does not deliver anything what should I do to play it on the app?
https://www.mediafire.com/view/db9ozz8i7gpzqll/d.jpg/file

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Backand- Sign in error with facebook and google

Im developing an app with ionic framework and im using Backand as BaaS, im using the sign in with social accounts service that provides me, but when im trying to sign in with facebook, return this error.
The user is not signed up to 'name-of-my-app'.(signing in with facebook).
And when im trying to sign in with google, return this error:
Object reference is not set to an instance of an object.
Also im create my own apps in facebook and google and i set the AppId and AppSecret to Backand.
I dont know why im receiving this error, actually im ussing almost the same code that the starter's Backand provides.
I have met this kind of error "Object reference is not set to an instance of an object" too, after pressing "Validate & Update" button, after editing database json model several times in the backand control panel. I could save the new model and continue, but that red error was appearing on top right at each save. My hypothesis is that also in your case the issue is related to a bug in the database model editor. I personally got rid of that kind of error by deleting the project (I had no data in it yet) and creating a new one, re-pasting and saving all at once the exact same database model json I created in the previous project.

Parse Signup Problems

So, I wanted to create a new social media app using Swift and Parse. When I go to the Parse site, and click on dashboard, it gives me a login screen. I don't have an account, so I click on the "I don't have a parse account" button. When I click on that, it just takes me back to the home page. I did manage to get the code and frameworks and stuff that I needed from the docs, but that didn't quite work. It gave me this for the initialize code:
let configuration = ParseClientConfiguration {
$0.applicationId = "YOUR_APP_ID"
$0.server = "http://YOUR_PARSE_SERVER:1337/parse"
}
In the tutorial I'm watching, rather than "YOUR_APP_ID" and "http://YOUR_PARSE_SERVER:1337/parse" it just had a bunch of letters and numbers, which I would assume are the app ID and Parse server. My guess is, that I need an account to get those. Would that be correct? And, does anyone know why I can't seem to get an account? Thanks.
Parse.com is shutting down, so that's why you are not allowed to create new accounts on the service. Check the blog post.
They open sourced a nodeJS implementation, which you should definitely check out at link, and here is an example to get you started. You can easily use the deploy buttons to host the server on services like Heroku, AWS, Azure, etc. You can also deploy a server locally, for testing purposes.
Although it's true that Parse is discontinuing early next year, you can still setup a new app if you want to use the service for a shorter term project. Replace your code with the following.
Parse.setApplicationId("YOUR-APP-ID", clientKey: "YOUR-CLIENT-ID")
You can find your App ID and Client ID in your app's settings > security & keys.
EDIT: You definitely need an account for this to work.

Payment Transaction State Failed

I am trying to make In-app purchase in my application using phonegap plugin which is https://github.com/phonegap/phonegap-plugins/tree/master/iPhone/InAppPurchaseManager
but in sandbox testing i'm getting following error
plugins.inAppPurchaseManager.updatedTransactionCallback.apply(plugins.inAppPurchaseManager, ["PaymentTransactionStateFailed",0,"Cannot connect to iTunes Store","","",""])
and then the application gets struck...can anyone help me out with this??
Take a look inside of InAppPurchaseManager.js, and you'll see the first call of InAppPurchaseManager.prototype.updatedTransactionCallback is:
alert(state);
Replace that with PhoneGap's preferred:
navigator.notification.alert(state);
And it should clear up fine.

Expression Engine using the Champagne Extension troubleshooting

I have an issue in Expression Engine using the Champagne Extension where it won't allow me to send out campaigns. This extension utilizes https://www.campaignmonitor.com/ api to send out mass emails.
The Error I get is "HTML Content URL Required" when I try to send out campaigns form the back end of the Expression Engine Install.
What could be causing this issue that relates to the expression engine install?
This error is received anytime the URL to your html or text content is not visible. More often this is seen when someone forget to include the text version. A good way to test is to click the preview HTML/TEXT button and make sure both give you the correct results.
They cannot be blank.
For an alternative solution, be sure to checkout my add-on Postmaster. It allows clients to publish email campaigns just by creating a new entry. You can setup any number of configuration, so you can even send draft email to a test subscriber list. And since everything is within channel entries, you can use whatever fieldtypes you like, and it works with MailChimp as well as CampaignMonitor.
https://objectivehtml.com/articles/postmaster-the-definitive-email-solution-for-expressionengine

Opening an email client on clicking a button

I am designing an app in which i need open an email client on clicking a button. The email client should be opened with pre defined subject,'to' address and from address of the user. Is there a way to attain this??? Plz provide me the solution and code if possible...
If you want to open the existing BlackBerry messages application use the Invoke class with the appropriate MessageArguments e.g.
Invoke.invokeApplication(Invoke.APP_TYPE_MESSAGES, new MessageArguments(MessageArguments.ARG_NEW, <to address>, <subject>, <body>);
I don't know of a way to change the from address.