Error in Modeler

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Member II

Error in Modeler

Hi All,

I am using the activiti cloud modeler. I install the docker-compose and follow the link of developer 7 guide to use the modeler.

I have some process which was design in activiti6 and I upload the same into the modeler in activiti 7 but when I try to save the process it prompt me validation error "Invalid service implementation on service Task". 

I have search and read the documentation on the service task implementation but none was helpful.

Please help me to resolve.