Gitlab pipeline fail with rsync error

GitLab CI/CD
1

Hello,

I used this pipeline in another project and there it works perfectly.
But now I have a problem (I’m using nearly the same settings I’m only missing one stage where I installed some npm reps in the other project)

staging_upload:
  stage: staging
  only:
    refs:
      - develop
      - schedules
  script:
    - sshpass -e rsync -avz --progress --exclude='.git' --exclude='.gitlab-ci.yml' . $SSH_USERNAME@$HOST:/home/xy/html/project/staging/

In this pipeline I get this error:

rsync error: received SIGINT, SIGTERM, or SIGHUP (code 20) at rsync.c(644) [sender=3.1.2]

Has anyone a clue what is going wrong here?