CocoaPods could not find compatible versions for pod "majascan":

[wesleyxiao]

[!] CocoaPods could not find compatible versions for pod "majascan":
In Podfile:
majascan (from .symlinks/plugins/majascan/ios)

Specs satisfying the majascan (from .symlinks/plugins/majascan/ios) dependency were found, but they required a higher minimum deployment target.

[!] Automatically assigning platform iOS with version 8.0 on target Runner because no platform was specified. Please specify a platform for this target in your Podfile. See https://guides.cocoapods.org/syntax/podfile.html#platform.
xinqis-MacBook-Pro-2:ios xinqixiao$ flutter clean
Changing current working directory to: /Users/xinqixiao/app/flutter/wadd
Cleaning Xcode workspace... 2.7s
Deleting build... 107ms
Deleting .dart_tool... 8ms
Deleting Generated.xcconfig... 0ms
Deleting flutter_export_environment.sh... 0ms
Deleting App.framework... 6ms
Deleting .flutter-plugins-dependencies... 0ms
Deleting .flutter-plugins... 0ms
xinqis-MacBook-Pro-2:ios xinqixiao$ flutter build ios
Changing current working directory to: /Users/xinqixiao/app/flutter/wadd
Running "flutter pub get" in wadd... 0.6s
Building com.example.waddApp for device (ios-release)...
Automatically signing iOS for device deployment using specified development team in Xcode project: 636ZQVPSEB
Running pod install... 0.9s
CocoaPods' output:
↳
Preparing

Analyzing dependencies

Inspecting targets to integrate
  Using `ARCHS` setting to build architectures of target `Pods-Runner`: (``)

Finding Podfile changes
  A majascan
  R qrscan
  - Flutter
  - barcode_scan
  - image_picker
  - path_provider
  - shared_preferences
  - sqflite
  - url_launcher
  - webview_flutter

Fetching external sources
-> Fetching podspec for `Flutter` from `Flutter`
-> Fetching podspec for `barcode_scan` from `.symlinks/plugins/barcode_scan/ios`
-> Fetching podspec for `image_picker` from `.symlinks/plugins/image_picker/ios`
-> Fetching podspec for `majascan` from `.symlinks/plugins/majascan/ios`
-> Fetching podspec for `path_provider` from `.symlinks/plugins/path_provider/ios`
-> Fetching podspec for `shared_preferences` from `.symlinks/plugins/shared_preferences/ios`
-> Fetching podspec for `sqflite` from `.symlinks/plugins/sqflite/ios`
-> Fetching podspec for `url_launcher` from `.symlinks/plugins/url_launcher/ios`
-> Fetching podspec for `webview_flutter` from `.symlinks/plugins/webview_flutter/ios`

Resolving dependencies of `Podfile`
  CDN: trunk Relative path: CocoaPods-version.yml exists! Returning local because checking is only perfomed in repo update
  CDN: trunk Relative path: all_pods_versions_0_2_a.txt exists! Returning local because checking is only perfomed in repo update
  CDN: trunk Relative path: Specs/0/2/a/MTBBarcodeScanner/5.0.11/MTBBarcodeScanner.podspec.json exists! Returning local because checking is only perfomed
  in repo update
[!] CocoaPods could not find compatible versions for pod "majascan":
  In Podfile:
    majascan (from `.symlinks/plugins/majascan/ios`)

Specs satisfying the `majascan (from `.symlinks/plugins/majascan/ios`)` dependency were found, but they required a higher minimum deployment target.

/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:328:in `raise_error_unless_state'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:310:in `block in unwind_for_conflict'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:308:in `tap'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:308:in `unwind_for_conflict'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:684:in `attempt_to_activate'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:254:in `process_topmost_state'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:182:in `resolve'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolver.rb:43:in `resolve'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/resolver.rb:94:in `resolve'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer/analyzer.rb:1065:in `block in resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/user_interface.rb:64:in `section'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer/analyzer.rb:1063:in `resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer/analyzer.rb:124:in `analyze'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer.rb:410:in `analyze'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer.rb:235:in `block in resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/user_interface.rb:64:in `section'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer.rb:234:in `resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer.rb:156:in `install!'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/command/install.rb:52:in `run'
/Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:334:in `run'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/command.rb:52:in `run'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/bin/pod:55:in `<top (required)>'
/usr/local/bin/pod:23:in `load'
/usr/local/bin/pod:23:in `<main>'

Error output from CocoaPods:
↳

[!] Automatically assigning platform `iOS` with version `8.0` on target `Runner` because no platform was specified. Please specify a platform for this
target in your Podfile. See `https://guides.cocoapods.org/syntax/podfile.html#platform`.

[maja0270558]

try

pod repo update

or

pod repo remove master
pod setup
pod install