Connection exhausted by technical service deletion

[StavrevaS]

[version] V16.0 GA1

[Frequency] Always

[How to reproduce]

1. Create VMware services
2. Subscribe VMware services
3. Unsubscribe VMware services
4. Delete VMware services
5. Delete Technical service for VMware

[Expected result]

• Technical service can be deleted

[Observed result]

• Technical service cannot be deleted(get unexpected error page) and exception occurred.