Xcode storyboard: Internal error. Please file a bug

Question

While editing in the storyboard, specifically assigning a view controller to a specific class, I suddenly encountered this error when I wanted to run the project.

Main.storyboard: Internal error. Please file a bug at bugreport.apple.com and attach "/var/folders/79/_jh611t15qsfcx165_jv_20h0000gn/T/IB-agent-diagnostics_2015-10-28_00-33-12_730000".

And now I can't run my project anymore. I couldn't find any information regarding to this anywhere else. Did anyone encounter this before?

Yes that's happening with me too a lot. Specially on xibs. Using Xcode 7.1 — Bhavuk Jain, Oct 27 '15 at 19:48
Xcode 7.1.1 was released earlier this week, and resolves this issue. — Quinn Taylor, Nov 11 '15 at 19:05
uncheck target for the xib file -> clean the project->then check the target->clean -> build the project. working in xcode 8.x — Shalini, Jan 16 '17 at 09:16
Same issue now on Xcode 9.2 i cleaned i restarted mac book i tried everything no use :((( — Kegham K., Mar 05 '18 at 15:51

score 122 · Accepted Answer · edited Dec 24 '22 at 01:57

122

I faced the same issue. And it was solved by cleaning up the build files.

cmd + shift + k

AND

cmd + option + shift + k

edited Dec 24 '22 at 01:57

starball

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answered Oct 28 '15 at 09:05

Fahad Ajmal

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Cleaning the build folder should not be necessary, this was an intermittent issue related to the iOS simulator, and is resolved in Xcode 7.1.1. – Quinn Taylor Nov 11 '15 at 19:05
Yeah. I used them together. So i wasn't sure which one worked. – Fahad Ajmal Nov 13 '15 at 06:13
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i have tried the above options but still not solved my issue – Dipen Desai Jan 02 '16 at 07:21
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@FahadAjmal I have tried this but not helping in Xcode 8.0 (beta) – Sunil Rao Jun 17 '16 at 10:11
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If cleaning doesn't work, try cleaning out the derived data also - which solves many of the Xcode problems for me. To clear derived data for all projects (which should be safe), in terminal type: `rm -rf ~/Library/Developer/Xcode/DerivedData` – oyalhi Aug 05 '17 at 08:43
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This does not work for me and any alternatives would be greatly appreciated. Thank You! – Purushottam Padhya Sep 15 '17 at 04:33
Thanks, glad I didn't waste my time in filing up the report. – NotABot Apr 13 '18 at 18:32
Occurred in Xcode 9.2 as well. Cleaning the project and closing the simulator solved the problem. – enadun Jul 25 '18 at 09:53

score 20 · Answer 2 · answered Dec 29 '16 at 05:48

20

The following steps will stop your problem.

cmd + shift + k
cmd + option + shift + k
Restart Xcode
Restart Mac.

answered Dec 29 '16 at 05:48

Syed Zahid Shah

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No need to start the Mac, Just restart the XCode. – Anil shukla Jun 14 '17 at 16:47
I had to delete derived data too... phew glad i didn't lose all that work :D – devjme Jun 20 '18 at 16:58
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Restart Mac saved my day! – Kimi Chiu Sep 21 '18 at 13:00

score 11 · Answer 3 · answered Sep 28 '16 at 14:44

11

Clearing out the DerivedData folder (in ~/Library/Developer/Xcode/DerivedData) is what fixed the issue for me.

answered Sep 28 '16 at 14:44

Charlton Provatas

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score 7 · Answer 4 · edited May 23 '17 at 11:54

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I had the same issue. Got it fixed using below steps :

Delete the derived data of your project
Clean your project (Shortcut : cmd + shift + k)

Now, run your app.

edited May 23 '17 at 11:54

Community

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answered Apr 26 '17 at 13:12

Jayprakash Dubey

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Hah. I guess I didn't try this exact combination of steps. Performing these steps in this order seems to have worked for me, however. Cheers! – FateNuller Aug 07 '17 at 07:16

score 6 · Answer 5 · edited Apr 11 '18 at 10:55

Just ran into this error, and it coincided with non-available iOS versions showing for the wrong Xcode (e.g., iOS 11.2 showing for Xcode 8.2.1, which is not possible for iOS Simulators).

Solution was to delete /Library/Developer/CoreSimulator, e.g.,

rm -rf /Library/Developer/CoreSimulator

In theory you should be able to run xcrun simctl delete unavailable but that didn't work in this case.

Note Found this issue on Xcode 8.2.1, but 9.2 was also installed.

score 2 · Answer 6 · answered Oct 27 '15 at 16:49

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Sounds like you found a bug in Xcode and should file a bug report with apple here and attach the file that it specifies with the error. In the mean time, do you have an earlier version of your project that you can revert back to? Or provide the xml of your main story board here?

answered Oct 27 '15 at 16:49

blahartinger

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Restoring an old version of my storyboard with Time Machine worked. Not sure filing a bug will help... – Antoine Nov 09 '17 at 18:15

score 2 · Answer 7 · answered Dec 11 '15 at 15:30

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In my case, the problem was with a UITextField as a subview in a UITableViewCell with 'Basic' styling. Once I changed it from 'Basic' to 'Custom' It started compiling.

answered Dec 11 '15 at 15:30

skram

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score 2 · Answer 8 · answered Nov 01 '17 at 07:43

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I simply removed the file causing this issue (just reference not delete) and re-added it again.

answered Nov 01 '17 at 07:43

Elsammak

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Awesome. Solved my problem. Only solution that was working for me. – EANicolas1 May 01 '20 at 12:06

score 1 · Answer 9 · answered Jan 16 '17 at 09:19

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Here are the steps to fix this issue:

Uncheck target for the xib file -> clean the project->then check the target->clean the project-> run/build the project. Working in xcode 8.x

answered Jan 16 '17 at 09:19

Shalini

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score 1 · Answer 10 · answered Mar 10 '18 at 09:58

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All these solutions didn't work for me.
What did work was this:

$ sudo chmod -R 777 ~/Library/Logs

answered Mar 10 '18 at 09:58

Floris Snuif

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This was the only solution that worked for me. Updating XCode 7.3.1 project to XCode 8.2.1. – Tim Newton May 13 '19 at 19:29

score 0 · Answer 11 · edited Jul 04 '16 at 08:48

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Try Deleting each view controller and Build to find the view controller causing an issue.

In my case, I misplaced object in the storyboard.

Deleting this object worked for me.

edited Jul 04 '16 at 08:48

mehrdad khosravi

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answered Jul 04 '16 at 08:01

karthick.r

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score 0 · Answer 12 · answered Sep 05 '16 at 05:14

I had same problem with xcode8 beta 6 , Command+K was not helpful , But then for which .xib file xcode was displaying error, I just corrected its related properties in IB like mine view was custom one & some of its inner image view properties. then i cleaned the build & run the app. It worked.

score 0 · Answer 13 · answered Mar 19 '17 at 08:58

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I had this issue on Xcode 8.2.1. Cleaning(cmd + option + shift + k) did not help. However, uninstalling the Xcode, downloading Xcode 8.2.1 from Apple, installing did resolve the issue.

answered Mar 19 '17 at 08:58

Nish

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score 0 · Answer 14 · answered Dec 19 '17 at 07:25

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Just close your Xcode and open it again. issue will be gone.

answered Dec 19 '17 at 07:25

ashish.surana

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just closing and opening again hasn't worked for me. – StartPlayer Jan 16 '18 at 10:45

score 0 · Answer 15 · answered Mar 05 '18 at 21:57

I'm using Xcode 9.2 and all the above answers didn't solve the issue. My issue was that i added a constraint accidentally to the TableViewCell Content View. And content view is not constraint applicable and i'm not supposed to add constraints to it. It is already locked. But i really don't know how i added constraint to it accidentally. After deleting the constraint everything started working again perfectly fine.

I thought this answer would help somebody having my same issue.

score 0 · Answer 16 · answered Aug 21 '19 at 17:43

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None of the other answers worked for me. Here's what did.

Open the storyboard, select all and copy.
Create a new storyboard, paste.
Delete original storyboard.
Rename all references to old storyboard.

Build and run.

answered Aug 21 '19 at 17:43

olynoise

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score 0 · Answer 17 · answered Sep 02 '19 at 21:13

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For me, I removed a whole UITableView section that was playing up. It only had one cell, but obviously something was up. Removing it and restarting Xcode fixed it for me.

answered Sep 02 '19 at 21:13

Aaron

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score 0 · Answer 18 · answered Feb 10 '20 at 04:08

No solution above work for me. I fix it with this:

close xcode
open Terminal app and goto project directory
run command 'pod install'. it regenerate my project
open project in xcode again

note: this only for project with cocoapod installed project

score 0 · Answer 19 · answered Mar 31 '23 at 05:02

The only thing that worked for me(not needing to restart the Mac) was:

(Close all Storyboard tabs opened on Xcode)
[Product] -> [Clean All Issues]
[Cmd] + [Shift] + [k]
[Cmd] + [Q] (Quit Xcode)
Open [Launchpad] -> [Xcode] instaled from AppStore
[Open a project or file] -> 'MyProjct.xcworkspace'
[Cmd] + [R] (Run)

Xcode storyboard: Internal error. Please file a bug

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