Unable to delete a template from SolusVM even it is not used by VPS: This template is being used by virtual servers

Symptoms 

• Unable to delete a template from SolusVM even it is not used by VPS:
  

  SVM_ERROR: This template is being used by virtual servers

• The same template ID on the page SolusVM > Media > Templates is used for another virtualization type and there is a VPS with that template:
  
  
  

Cause

The SolusVM bug with ID SVM-3224, which has been fixed in version 1.25.18.

Resolution

Update SolusVM to the latest mainline version.