updata:

projects/textbook/src/app/textbook/textbook.component.html

@@ -140,7 +140,7 @@
           {{ data?.get("lang") || "-" }}
         </td>
         <td nzEllipsis>
-          {{ data?.get("majorPoniter") || "-" }}
+          {{ data?.get("majorPoniter")?.name || "-" }}
         </td>
         <td nzEllipsis>
           {{ data?.get("editionUnit") || "-" }}