Alert error message if open dependencies are included in the issues that try to batch close

options/locale/locale_en-US.ini

@@ -1541,6 +1541,7 @@ issues.dependency.issue_closing_blockedby = Closing this issue is blocked by the
 issues.dependency.issue_close_blocks = This issue blocks closing of the following issues
 issues.dependency.pr_close_blocks = This pull request blocks closing of the following issues
 issues.dependency.issue_close_blocked = You need to close all issues blocking this issue before you can close it.
+issues.dependency.issue_batch_close_blocked = "Cannot batch close issues that you choose, because issue #%d still has open dependencies"
 issues.dependency.pr_close_blocked = You need to close all issues blocking this pull request before you can merge it.
 issues.dependency.blocks_short = Blocks
 issues.dependency.blocked_by_short = Depends on

routers/web/repo/issue.go

@@ -2689,7 +2689,7 @@ func UpdateIssueStatus(ctx *context.Context) {
 			if err := issue_service.ChangeStatus(issue, ctx.Doer, "", isClosed); err != nil {
 				if issues_model.IsErrDependenciesLeft(err) {
 					ctx.JSON(http.StatusPreconditionFailed, map[string]interface{}{
-						"error": "cannot close this issue because it still has open dependencies",
+						"error": ctx.Tr("repo.issues.dependency.issue_batch_close_blocked", issue.Index),
 					})
 					return
 				}

web_src/js/features/repo-issue-list.js

@@ -55,6 +55,8 @@ function initRepoIssueListCheckboxes() {
       elementId
     ).then(() => {
       window.location.reload();
+    }).catch((reason) => {
+      window.alert(reason.responseJSON.error);
     });
   });
 }