gradle can't resolve dependency in privare repository (nexus) - gradle

Question

I am running into problems with gradle while resolving dependencies. Some of my projects uses a core-lib which I provide by my private repository - nexus3. And the weirdest part is, one of this projects resolves the dependency, while the others can't. I have no Idea what I am doing wrong:
This is how I define my gradle repositories:
repositories {
maven {
credentials {
username = "user"
password = "password"
}
url = uri("https://my-nexus-url/repository/group-repo/")
}
mavenCentral()
}
This is how the dependency is implemented:
dependencies {
...
implementation("my.lib.core:core:1.0")
...
}
This is how is the puiblishing configure block:
publishing {
publications {
create<MavenPublication>("maven") {
groupId = "my.lib.core"
artifactId = "core"
version = "1.0"
from(components["java"])
}
}
repositories {
maven {
credentials {
username = "user"
password = "password"
}
url = uri("https://my-nexus-url/repository/release-repo/")
}
}
}
I am also able to download the artifact via nexus web ui and curl. Furthermore already one of these projects is able to implement it. The rest of them throws:
Could not resolve my.lib.core:core:1.0.
Required by:
project :lib
Possible solution:
- Declare repository providing the artifact, see the documentation at https://docs.gradle.org/current/userguide/declaring_repositories.html
Running gradlew ass --refresh-dependencies works fine and ends with:
Cached resource https://my-nexus-url/repository/group-repo/my/lib/core/core/1.0/core-1.0.jar is up-to-date (lastModified: Tue Mar 08 23:05:19 CET 2022).