ein Paar Einträge haben keine Growthduration, deshalb habe ich die methode angepasst

src/main/java/hdm/mi/growbros/service/GrandmaService.java

@@ -121,8 +121,10 @@ public class GrandmaService {
             int growthDuration = entry.getPlant().getGrowthDuration();
             LocalDate createdAt = entry.getCreatedAt().toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
             LocalDate currentDate = LocalDate.now();
-            if(growthDuration >= ChronoUnit.WEEKS.between(createdAt,currentDate)){
-                plantsReadyToHarvest.add(entry);
+            if(growthDuration != 0 ) {
+                if (growthDuration >= ChronoUnit.WEEKS.between(createdAt, currentDate)) {
+                    plantsReadyToHarvest.add(entry);
+                }
             }
 
         }