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Tried cleaning caches and other method mentioned on forum to resolve this but dint worked. If I open new project it works, but that also crashes after 3-4 days.How this can be resolved [![ ][1]][1]

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vinita jain
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  • Unfortunately, your screen shot does not show the stack trace of the crashed main thread. Maybe one can find valuable information there. – Reinhard Männer Dec 23 '19 at 20:12
  • @ReinhardMännerupdated the new screenshot. – vinita jain Jan 06 '20 at 22:57
  • The stack trace shows that an Xcode internal software package, IDE, hit an assertion that failed. This seems to be an Xcode bug, and a report has been sent to Apple automatically. If the usual things (clearing the project, deleting the derived data, restart of Xcode und rebooting the Mac) do not help, I also suggest to upgrade to Xcode 11. – Reinhard Männer Jan 07 '20 at 10:59

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Delete ~/Library/Developer/Xcode/DerivedData by running this command in terminal: 

rm -r ~/Library/Developer/XCode/DerivedData

If that doesnt work, At this point and with given info, all I could recommend to delete and reinstall Xcode.

JohnWick
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  • Hi Rahul, Thanks for a quick reply, I tried running command and did reinstalled Xcode also, nothing worked. – vinita jain Dec 23 '19 at 16:47
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    if you are using pods than go to Workspace right click > show package content > delete xcuserdata foler go back same thing again for xcodeproj and again do it for workspace. second option is to update your xcode to 10.2 – JohnWick Dec 24 '19 at 06:50