{"type":"https://www.jhipster.tech/problem/problem-with-message","title":"Bad Request","status":400,"detail":"JSON parse error: Cannot construct instance of `com.bosch.procon.domain.PlanningConstraintTemplate` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('null'); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `com.bosch.procon.domain.PlanningConstraintTemplate` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('null')\n at [Source: (PushbackInputStream); line: 1, column: 254087] (through reference chain: com.bosch.procon.domain.PlanningProcess[\"planningConstraintTemplate\"])","path":"/api/leveling/generate-solution/1563533535514","message":"error.http.400"}