Camunda WebApp couldnt be started in SpringBoot - spring

maybe somebody can help me with my problem. Currently trying to get Camunda running within my Spring Boot App. The Core Camunda Parts i could get running, but now i would like to add also the WebApps of Camunda (Cockpit / Tasklist etc.)
i added the dependency:
<dependency>
<groupId>org.camunda.bpm.springboot</groupId>
<artifactId>camunda-bpm-spring-boot-starter-webapp</artifactId>
<version>7.13.0</version>
<scope>provided</scope>
I tried to access it via the localhost:8080/camunda/app/welcome/ but besides of the Loading indicator i cant see anything. In my Spring Boot Application instead I see that a lot of Java Script couldn't be found from Frontend Request. e.g getting the error 404 /localhost/camunda/require.js not found.
Has anybody any idea what i am doing wrong. I tried it once with an empty Spring Boot Project and there it was working fine, but adding it to an existing project causes this issue.

More information on your project (depenedency:tree) would be required to tell why. Most likely you have included incompatible versions. Clearing the browser cache or trying in a private window may also help.
You can always create a clean Spring Boot setup with compatible library / Spring Boot versions including engine, REST API, Web Apps (and possibly security, Camunda BPM assert) using https://start.camunda.com/.

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