fix

src/pages/ProjectTracker/ProjectTracker.js

@@ -570,14 +570,13 @@ export const ProjectTracker = () => {
                             <span
                               className="add"
                               onClick={() =>
+                                {
                                   selectedTabTask(
                                       column.id,
-                                  projectBoard?.columns
-                                    ? projectBoard?.columns[0].tasks.at(-1)
-                                        .priority + 1
-                                    : 1
+                                      projectBoard?.columns && column.tasks.length ? column.tasks.at(-1).priority + 1 : 1
                                   )
                                 }
+                              }
                             >
                               +
                             </span>