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Fixing The «Unrecognized Selector Sent to Instance» Error in Xcode

Fixing The «Unrecognized Selector Sent to Instance» Error in Xcode

Aasif

The “Unrecognized selector sent to instance” is an annoying error in Xcode. With Swift’s syntax improvements this error occurs less often, but it still pops up every now and then. How do you solve it?

In this tutorial, you’ll learn to debug Unrecognized selector sent to instance. We’ll discuss where the error comes from and how to solve it.

Debugging is part of becoming an effective iOS developer. Fixing errors is a great way to learn more about iOS development, so take your time to go in-depth.

You can add or replace up to 10 email addresses. This limit includes current emails and any that have been recently removed.

Add a mobile number or email address

From a web browser:

    .
  1. Click Add email or Add phone number.
  2. Enter your new recovery info.
  3. Click Add email or Add mobile number.
  4. Follow the on-screen prompts to verify your new info.

From most Yahoo mobile apps:

  1. In the upper left, tap your Profile icon.
  2. Tap Manage accounts.
  3. Tap Account info.
  4. Tap Security Settings.
  5. Tap Add email or Add phone number.
  6. Follow the on-screen prompts to enter and verify your new info.

Edit a mobile number or email address

From a web browser:

    .
  1. Click Edit next to the verification option you want to change.
  2. Click the Edit iconImage of the Edit icon.next to the recovery option you want to change.
  3. Enter your new recovery info.
  4. Click Confirm.
  5. Follow the on-screen prompts to verify your new info.

From most Yahoo mobile apps:

  1. In the upper left, tap your Profile icon.
  2. Tap Manage accounts.
  3. Tap Account info.
  4. Tap Security Settings.
  5. Tap Edit next to the verification option you want to change.
  6. Tap the Edit iconImage of the Edit icon.next to the recovery option you want to change.
  7. Enter your new recovery info.
  8. Tap Confirm.
  9. Follow the on-screen prompts to verify your new info.
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Delete a mobile number or email address

From a web browser:

    .
  1. Click Edit next to the verification option you want to delete.
  2. Click the Edit iconImage of the Edit icon.next to the recovery option you want to delete.
  3. Click Remove from my account.
  4. Follow the on-screen prompts to confirm the deletion.

From most Yahoo mobile apps:

  1. In the upper left, tap your Profile icon.
  2. Tap Manage accounts.
  3. Tap Account info.
  4. Tap Security Settings.
  5. Tap Edit next to the verification option you want to delete.
  6. Tap the Edit iconImage of the Edit icon.next to the recovery option you want to delete.
  7. Tap Remove from my account.
  8. Follow the on-screen prompts to confirm the deletion.

Verify a mobile number or email address

From a web browser:

    .
  1. Click Edit next to any unverified recovery option.
  2. Click Verify now next to any unverified recovery option.
  3. Follow the on-screen prompts to complete the verification process.

From most Yahoo mobile apps:

  1. In the upper left, tap your Profile icon.
  2. Tap Manage accounts.
  3. Tap Account info.
  4. Tap Security Settings.
  5. Tap Edit next to any unverified recovery option.
  6. Tap Verify now next to any unverified recovery option.
  7. Follow the on-screen prompts to complete the verification process.

Unlink recovery info from an unused or unrecognized account

Note: If you unlink a recovery option using this method, you won't be able to add that same recovery option back to your account again. To remove a recovery method, but still retain the option to add it back again in the future, follow the steps above to "Delete a mobile number or email address."

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Before disconnecting a phone number or email address, you’ll need to be signed out of the associated account.

    .
  1. Enter your mobile phone number or alternate email address.
  2. Click Continue.
  3. Click Yes, send me a code.
    — We'll send a verification code to your phone or email.
  4. Enter the verification code in the field provided.
  5. Click Verify.
  6. Click the More icon next to the account you want to unlink | select Unlink this account.
  7. Click Unlink account to confirm.

SVG <path> tag unrecognized with React 16 #10955

I have an element in which I have code similar to this:

The svg and it’s paths are rendered, but I get an error in the console:

The tag <path> is unrecognized in this browser. If you meant to render a React component, start its name with an uppercase letter.

What is the right way to render this svg? I never got a message like this in React 15.x.

The text was updated successfully, but these errors were encountered:

gaearon commented Sep 29, 2017

I cannot reproduce this with your example.
Please provide a full reproducing project and say which browser you’re using.

screen shot 2017-09-29 at 13 58 43

ashwinvandijk commented Sep 29, 2017

Ah, you found my example :). I was still working on it, because I can’t reproduce it there myself. I think it has something to do with the combination of external libraries. I will update the example when I find the time. Thanks!

gaearon commented Sep 29, 2017

Oh, I just copy pasted your snippet into an empty page
But it didn’t help.

If you can provide an example that would be great.

gaearon commented Oct 3, 2017

I’m going to close as this is currently unreproducible.

I suspect that for some reason you were accidentally rendering <path> outside of <svg> . Another possibility is that there’s some bug in how we track namespaces, but we can only check that with a reproducing example.

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If you find one, let us know and we can reopen. Or feel free to file a new issue.

ericclemmons commented Nov 22, 2017

Somewhat related, but you can see similar errors when using something like http://barecss.com/ with custom tags:

Warning: The tag is unrecognized in this browser. If you meant to render a React component, start its name with an uppercase letter.

Users experiencing this legitimately are likely in the minority, I’m sure.

gaearon commented Nov 22, 2017

The site says it explicitly:

Getting a classless grid system means using the very non-standards compliant but totally working grid element.

Cards use the also totally non-compliant card element but works fine in IE9+. These cards are meant to be used within a grid.

This is not great because it prevents standards from actually introducing such elements in the future (since they may break existing websites). I don’t think we’ll be going out of our way to support this.

ericclemmons commented Nov 22, 2017

Oh, I completely understand the implications. I just wanted to add that note that, again, likely a minority of people may see that’s not directly related to SVG.

It’s a warning, after all. (for those that find this since it’s ranked #1 in Google for this warning)

Is SmartScreen a privacy issue?

Much like anything in the Windows 10 environment – privacy is … secretive which means it’s lacking.

Microsoft have said that they are not keeping personally identifiable information such as your IP address – but they do collect it when communicating with their online system.

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Personally, I think the security benefits of SmartScreen out way the privacy issues – and even if you were to disable it, Windows 10 is like a leaking sieve when it comes to privacy. If privacy were a concern I would consider an alternative operating system.

smartscreen3

Ian Paul/IDG

The Windows 10 SmartScreen in the Creators Update.

When SmartScreen appears it usually says the app you want to install is unrecognized. The filter then leaves you with only one button to push: Don’t run.

By showing only one option, Microsoft hopes to prevent the majority of users from running untrusted apps, because many won’t bother to look beyond that single button.

smartscreen2

Ian Paul/IDG

Now you can install the program you want.

If you still want to take the risk and proceed, click the More info link at the end of the warning paragraph.

When you click that, you then see a window like this one at left, with a new option: Run anyway. Click that, and you’re all set. The program will start installing as normal.

Phone numbers can be spoofed to impersonate legitimate companies. If you receive a request by phone for your PIN, temporary access code, or online banking password, do not respond. Call the number on the back of your card or the website to verify the request.

Wells Fargo may email, text, or call you if we detect unusual account activity. We will not ask for your card PIN, temporary access code, or online banking password. We may also send you a temporary access code to verify your identity based on an action you have taken, such as when you sign on or use Zelle ® . If you receive an unexpected access code, do not provide it to anyone who contacts you asking for it and call us immediately.

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What to do if you already clicked?

If you suspect you have malware on your system, there are simple steps you can take.

Open your webcam application. If you can’t access the device because it is already in use this is a telltale sign that you might be infected. Higher than normal battery usage or a machine running hotter than usual are also good indicators that something isn’t quite right.

Make sure you have good anti-virus and anti-malware software installed. Estonian start-ups, such as Malware Bytes and Seguru, can be installed on your phone as well as your desktop to provide real time protection. If you are running a website, make sure you have good security installed. Wordfence works well for WordPress blogs.

More importantly though, make sure you know how much data about you has already been exposed. Google yourself – including a Google image search against your profile picture – to see what is online.

Check all your email addresses on the website haveibeenpwned.com to see whether your passwords have been exposed. Then make sure you never use any passwords again on other services. Basically, treat them as compromised.

Cyber security has technical aspects, but remember: any attack that doesn’t affect a person or an organisation is just a technical hitch. Cyber attacks are a human problem.

The more you know about your own digital presence, the better prepared you will be. All of our individual efforts better secure our organisations, our schools, and our family and friends.

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