The type Graze\UnicontrollerClien...\Entity\EntityInterface was not found. Did you mean Graze\UnicontrollerClien...\Entity\EntityInterface? If so, make sure to prefix the type with \.
The expression return $this->entityHydr...s' => $string == '
')) returns the type Graze\UnicontrollerClien...ty\Entity\EntityGeneric which is incompatible with the documented return type Graze\UnicontrollerClien...\Entity\EntityInterface.