Build Fail: Error: Cannot read property 'text' of undefined



I created an app with the ionic creator and downloaded the zip file. After creating a new project and replaced the src file I got the following error after trying to open the project with ionic serve.

C:\Users\RamonaSpringmann\Desktop\qualilast>ionic serve

ionic-app-scripts serve --address --port 8100 --livereload-port 35729 --dev-logger-port 53703 --nobrowser
[app-scripts] [10:28:56] ionic-app-scripts 3.2.1
[app-scripts] [10:28:56] watch started …
[app-scripts] [10:28:56] build dev started …
[app-scripts] [10:28:57] clean started …
[app-scripts] [10:28:57] clean finished in less than 1 ms
[app-scripts] [10:28:57] copy started …
[app-scripts] [10:28:57] deeplinks started …

[app-scripts] [10:28:57] ionic-app-script task: “serve”
[app-scripts] [10:28:57] Error: Cannot read property ‘text’ of undefined
[app-scripts] Error: Cannot read property ‘text’ of undefined
[app-scripts] at new BuildError

[app-scripts] at C:\Users\RamonaSpringmann\Desktop\qualilast\node_modules@ionic\app-scripts\dist\deep-linking.js:57:21
[app-scripts] at

[ERROR] ionic-app-scripts has unexpectedly closed (exit code 1).

The Ionic CLI will exit. Please check any output above for error details.

C:\Users…\Desktop\qualilast>ionic info


ionic (Ionic CLI) : 4.5.0 (C:\Users…\AppData\Roaming\npm\node_modules\ionic)
Ionic Framework : ionic-angular 3.9.2
@ionic/app-scripts : 3.2.1


NodeJS : v8.11.3 (C:\Program Files\nodejs\node.exe)
npm : 5.6.0
OS : Windows 10

Anyone some ideas?