修改

cqb-paper/src/main/java/com/qmth/cqb/paper/service/impl/PaperServiceImpl.java

@@ -643,6 +643,9 @@ public class PaperServiceImpl implements PaperService{
 						if(paperDetailUnit.getQuestion().getDifficultyDegree()== null){
 							paperDetailUnit.getQuestion().setDifficultyDegree(0.5);
 						}
+						if(paperDetailUnit.getScore()== null){
+							paperDetailUnit.setScore(0d);
+						}
 						sum = paperDetailUnit.getScore() * paperDetailUnit.getQuestion().getDifficultyDegree() + sum;
 					}
 				}