Maven Deploy validation failed: Invalid signature for file

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Hello. I had the same error.In my case The problem was in the signing section. I fix it by apply the signing manually:

add the plugin in your gradle:

id("signing")

then config it:

signing {
    useInMemoryPgpKeys(
        keystoreProperties["signing.keyId"].toString(),
        File(keystoreProperties["signing.secretKeyFile"].toString()).readText(),
        keystoreProperties["signing.password"].toString()
    )
}

hope it helps someone. Happy coding