Errors running the sample project signal-event-interrupts-parallel-branch

Hi,
I have imported the project and tried to build.
Getting the following error messages:

[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] Non-resolvable import POM: Could not transfer artifact org.camunda.bpm:camunda-bom:pom:7.5.0 from/to camunda-bpm-nexus (https://app.camunda.com/nexus/content/groups/public): app.camunda.com @ line 24, column 19
[ERROR] Non-resolvable import POM: Could not transfer artifact org.camunda.bpm.dmn:camunda-engine-dmn-bom:pom:7.5.0 from/to camunda-bpm-nexus (https://app.camunda.com/nexus/content/groups/public): app.camunda.com @ line 31, column 19
[ERROR] ‘dependencies.dependency.version’ for org.camunda.bpm:camunda-engine:jar is missing. @ line 42, column 17
[ERROR] ‘dependencies.dependency.version’ for org.camunda.bpm.dmn:camunda-engine-dmn:jar is missing. @ line 48, column 17
[ERROR] ‘dependencies.dependency.version’ for org.camunda.spin:camunda-spin-dataformat-all:jar is missing. @ line 64, column 17
[ERROR] ‘dependencies.dependency.version’ for org.camunda.bpm:camunda-engine-plugin-spin:jar is missing. @ line 69, column 17
[ERROR] ‘dependencies.dependency.version’ for org.camunda.connect:camunda-connect-connectors-all:jar is missing. @ line 76, column 17
[ERROR] ‘dependencies.dependency.version’ for org.camunda.bpm:camunda-engine-plugin-connect:jar is missing. @ line 81, column 17
@
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR] The project com.camunda.bpm.demo:signal-event-interrupts-parallel-branch:0.0.1-SNAPSHOT (C:\camunda-consulting\snippets\signal-event-interrupts-parallel-branch\pom.xml) has 8 errors
[ERROR] Non-resolvable import POM: Could not transfer artifact org.camunda.bpm:camunda-bom:pom:7.5.0 from/to camunda-bpm-nexus (https://app.camunda.com/nexus/content/groups/public): app.camunda.com @ line 24, column 19: Unknown host app.camunda.com -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.camunda.bpm.dmn:camunda-engine-dmn-bom:pom:7.5.0 from/to camunda-bpm-nexus (https://app.camunda.com/nexus/content/groups/public): app.camunda.com @ line 31, column 19: Unknown host app.camunda.com -> [Help 2]
[ERROR] ‘dependencies.dependency.version’ for org.camunda.bpm:camunda-engine:jar is missing. @ line 42, column 17
[ERROR] ‘dependencies.dependency.version’ for org.camunda.bpm.dmn:camunda-engine-dmn:jar is missing. @ line 48, column 17
[ERROR] ‘dependencies.dependency.version’ for org.camunda.spin:camunda-spin-dataformat-all:jar is missing. @ line 64, column 17
[ERROR] ‘dependencies.dependency.version’ for org.camunda.bpm:camunda-engine-plugin-spin:jar is missing. @ line 69, column 17
[ERROR] ‘dependencies.dependency.version’ for org.camunda.connect:camunda-connect-connectors-all:jar is missing. @ line 76, column 17
[ERROR] ‘dependencies.dependency.version’ for org.camunda.bpm:camunda-engine-plugin-connect:jar is missing. @ line 81, column 17

Any idea ?