答案为null修改

examcloud-core-questions-service/src/main/java/cn/com/qmth/examcloud/core/questions/service/impl/ExtractConfigServiceImpl.java

@@ -1056,7 +1056,7 @@ public class ExtractConfigServiceImpl implements ExtractConfigService {
 	
 	public String startWithP(String s,Integer number,boolean option){
 		if(s==null){
-			return null;
+			s = "<p></p>";
 		}
 		if(number == -2){
 			if(s.startsWith("<p>")){