fix(kb.gbapp): Skips blank answers lines.

packages/kb.gbapp/services/KBService.ts

@@ -506,6 +506,12 @@ export class KBService implements IGBKBService {
             indexer++;
           });
 
+          // Skips blank answers.
+
+          if (answer && answer.length < 1) {
+            return false;
+          }
+
           // Now with all the data ready, creates entities in the store.
 
           const answer1 = {