Unable to open Xcode 10.1. Getting Package Authoring Error
There are two Xcode 10.1 and 11 installed on my Mac wherein 10.1 is default one. I was able to open project using Xcode 10.1 until few hours ago. However, after restarting my mac I'm facing strange issue as described below:
Package Authoring Error: PackageInfo bundle reference found without top-level bundle definition. Bundle will be skipped.
Check attached screenshot for additional details. 
Below are solutions that I tried:
- Tried mutiple time to open project using Xcode10.1 but still the same issue
- Restart Mac.
Take a note that I cannot move my project into Xcode11 there are certain dependicies due to which I've to use Xcode10.1.
Solution
Apple is enforcing developer to use latest version of Xcode.
There are two solution for this:
- Move on to Xcode 11 (recommended)
- Delete Xcode 10.1 and freshly install Xcode 10.1
I would suggest to go with solution 1.
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