'Higher minimum deployment target' error when installing Firebase Crash Reports Pods for iOS

Make sure to change the minimum deployment target in Podfile so for example if the minimum deployment target is meant to be iOS 9, it should be changed to that minimum

platform :ios, '9.0'
....
....
....

use deployment as 8.0 or 8.1 or 9.0

None of the answers listed above fixed it for me. Changing to even the latest iOS target version did not work. What worked for me was this:

pod install --repo-update