Manifest file is not signed

[cpiock]

Why my manifest files is not signed but in the logs tells me that the sign was successfully.

2024-10-02T14:25:43.8697822Z The client secret options are obsolete and should no longer be specified.
2024-10-02T14:25:44.9009217Z info: Sign.Core.ISigner[0]
2024-10-02T14:25:44.9036474Z       Submitting xxx\Application Files\MYAPP_1_1_0_152\MYAPP.exe.manifest for signing.
2024-10-02T14:25:44.9053152Z info: Sign.Core.ISigner[0]
2024-10-02T14:25:44.9078364Z       SignAsync called for xxx\Application Files\MYAPP_1_1_0_152\MYAPP.exe.manifest. Using C:\Windows\SystemTemp\zwwa3gvj.5h4\1ph3jyhy.nu1 locally.
2024-10-02T14:25:44.9162440Z info: Sign.Core.ISigner[0]
2024-10-02T14:25:44.9188738Z       Completed in 23 ms.

My powershell script for sign in my Azure Pipelines ist the following

sign code azure-key-vault `
        "*.exe.manifest" `
        --publisher-name "$(PublisherName)" `
        --description "$(PublisherName)" `
        --azure-key-vault-tenant-id "$signingTenantId" `
        --azure-key-vault-client-id "$signingClientId" `
        --azure-key-vault-client-secret "$signingClientSecret" `
        --azure-key-vault-certificate "$certificateName" `
        --azure-key-vault-url "$signingVaultURL" `
        --timestamp-url http://timestamp.digicert.com `
        --base-directory "xxx\${directory}" `
        --verbosity debug `

I have no idea what is wrong. Any help welcome