No such Module after successful building yesterday

Why out of nowhere am I getting that certain modules are not found?

Here is my pod file

 platform :ios, '9.0'
project '.xcodeproj location'

target 'SoldFor' do
  # Comment the next line if you're not using Swift and don't want to use dynamic frameworks
  use_frameworks!

  # Pods for SoldFor
pod 'OneSignal', '>= 2.6.2', '< 3.0'
pod 'Firebase/Core'
pod 'Firebase/Auth'
pod 'Firebase/Storage'
pod 'Firebase/Database'
pod 'Fabric', '~> 1.10.2'
pod 'Crashlytics', '~> 3.14.0'
pod 'Firebase/Analytics'
pod 'MaterialComponents'
pod 'Toast-Swift', '~> 5.0.1'
# pod 'Charts'
pod 'MaterialComponents/ActivityIndicator'
pod 'MaterialComponents/Chips'
pod 'Google-Mobile-Ads-SDK'
pod 'Alamofire'
pod 'SwiftyJSON', '~> 4.0'
 pod 'SDWebImage', :modular_headers => true
end

target 'OneSignalNotificationServiceExtension' do
  use_frameworks!
  pod 'OneSignal', '>= 2.6.2', '< 3.0'
end

Yesterday everything was fine, then out of nowhere, this happens.

Things I have done:

I cleaned the project
I restarted the project
I deleted the workspace and redid a pod install
I 'almost' threw my laptop.

Edit: If I do a head and remove that import, and the code that goes with it... I then try to rebuild, then the project complains about import Firebase saying there is no such module.

Solution

In case anyone finds this, and really for me to go back to it in case this happened again.

Open but the Build Settings for your application.

Look for Framework Search Paths
Double click on debug
If there is anything in that list, highlight it all and click on the - button to remove it.
Click the + sign, and add the following: $(inherited) (make sure it's non-recursive)
Do the same for Release

Do the same for Header Search Paths