The current version of EAP operator creates pods with liveness and readiness probes based on scripts, eg.

      readinessProbe:
        exec:
          command:
            - /bin/bash
            - '-c'
            - /opt/eap/bin/readinessProbe.sh

Those scripts are no longer available in EAP8+ images (EAP7-1735) and probes should be defines as HTTP checks on /heath/ready or /health/live