diff --git a/polygerrit-ui/app/elements/admin/gr-group-audit-log/gr-group-audit-log.ts b/polygerrit-ui/app/elements/admin/gr-group-audit-log/gr-group-audit-log.ts
index 2582170..e5a1586 100644
--- a/polygerrit-ui/app/elements/admin/gr-group-audit-log/gr-group-audit-log.ts
+++ b/polygerrit-ui/app/elements/admin/gr-group-audit-log/gr-group-audit-log.ts
@@ -80,7 +80,9 @@
       return '';
     }
 
-    const errFn: ErrorCallback = response => firePageError(this, response);
+    const errFn: ErrorCallback = response => {
+      firePageError(this, response);
+    };
 
     return this.$.restAPI
       .getGroupAuditLog(this.groupId, errFn)
diff --git a/polygerrit-ui/app/elements/admin/gr-group-members/gr-group-members.ts b/polygerrit-ui/app/elements/admin/gr-group-members/gr-group-members.ts
index 1cd55ca..01571a2 100644
--- a/polygerrit-ui/app/elements/admin/gr-group-members/gr-group-members.ts
+++ b/polygerrit-ui/app/elements/admin/gr-group-members/gr-group-members.ts
@@ -140,7 +140,9 @@
 
     const promises: Promise<void>[] = [];
 
-    const errFn: ErrorCallback = response => firePageError(this, response);
+    const errFn: ErrorCallback = response => {
+      firePageError(this, response);
+    };
 
     return this.$.restAPI.getGroupConfig(this.groupId, errFn).then(config => {
       if (!config || !config.name) {
diff --git a/polygerrit-ui/app/elements/admin/gr-group/gr-group.ts b/polygerrit-ui/app/elements/admin/gr-group/gr-group.ts
index 95a6e5d..4525543 100644
--- a/polygerrit-ui/app/elements/admin/gr-group/gr-group.ts
+++ b/polygerrit-ui/app/elements/admin/gr-group/gr-group.ts
@@ -145,7 +145,9 @@
 
     const promises: Promise<unknown>[] = [];
 
-    const errFn: ErrorCallback = response => firePageError(this, response);
+    const errFn: ErrorCallback = response => {
+      firePageError(this, response);
+    };
 
     return this.$.restAPI.getGroupConfig(this.groupId, errFn).then(config => {
       if (!config || !config.name) {
diff --git a/polygerrit-ui/app/elements/admin/gr-plugin-list/gr-plugin-list.ts b/polygerrit-ui/app/elements/admin/gr-plugin-list/gr-plugin-list.ts
index 922f592..9337042 100644
--- a/polygerrit-ui/app/elements/admin/gr-plugin-list/gr-plugin-list.ts
+++ b/polygerrit-ui/app/elements/admin/gr-plugin-list/gr-plugin-list.ts
@@ -98,7 +98,9 @@
   }
 
   _getPlugins(filter: string, pluginsPerPage: number, offset?: number) {
-    const errFn: ErrorCallback = response => firePageError(this, response);
+    const errFn: ErrorCallback = response => {
+      firePageError(this, response);
+    };
     return this.$.restAPI
       .getPlugins(filter, pluginsPerPage, offset, errFn)
       .then(plugins => {
diff --git a/polygerrit-ui/app/elements/admin/gr-repo-access/gr-repo-access.ts b/polygerrit-ui/app/elements/admin/gr-repo-access/gr-repo-access.ts
index fde7234..31e1f65 100644
--- a/polygerrit-ui/app/elements/admin/gr-repo-access/gr-repo-access.ts
+++ b/polygerrit-ui/app/elements/admin/gr-repo-access/gr-repo-access.ts
@@ -155,7 +155,9 @@
   }
 
   _reload(repo: RepoName) {
-    const errFn = (response?: Response | null) => firePageError(this, response);
+    const errFn = (response?: Response | null) => {
+      firePageError(this, response);
+    };
 
     this._editing = false;
 
diff --git a/polygerrit-ui/app/elements/admin/gr-repo-dashboards/gr-repo-dashboards.ts b/polygerrit-ui/app/elements/admin/gr-repo-dashboards/gr-repo-dashboards.ts
index f2735fb..99f85fa 100644
--- a/polygerrit-ui/app/elements/admin/gr-repo-dashboards/gr-repo-dashboards.ts
+++ b/polygerrit-ui/app/elements/admin/gr-repo-dashboards/gr-repo-dashboards.ts
@@ -62,7 +62,9 @@
       return Promise.resolve();
     }
 
-    const errFn: ErrorCallback = response => firePageError(this, response);
+    const errFn: ErrorCallback = response => {
+      firePageError(this, response);
+    };
 
     return this.$.restAPI
       .getRepoDashboards(repo, errFn)
diff --git a/polygerrit-ui/app/elements/admin/gr-repo-detail-list/gr-repo-detail-list.ts b/polygerrit-ui/app/elements/admin/gr-repo-detail-list/gr-repo-detail-list.ts
index e4e9d34..17414c0 100644
--- a/polygerrit-ui/app/elements/admin/gr-repo-detail-list/gr-repo-detail-list.ts
+++ b/polygerrit-ui/app/elements/admin/gr-repo-detail-list/gr-repo-detail-list.ts
@@ -182,7 +182,9 @@
     this._loading = true;
     this._items = [];
     flush();
-    const errFn: ErrorCallback = response => firePageError(this, response);
+    const errFn: ErrorCallback = response => {
+      firePageError(this, response);
+    };
 
     if (detailType === RepoDetailView.BRANCHES) {
       return this.$.restAPI
diff --git a/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.ts b/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.ts
index 3acf8fa..426e512 100644
--- a/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.ts
+++ b/polygerrit-ui/app/elements/admin/gr-repo/gr-repo.ts
@@ -176,7 +176,9 @@
 
     const promises = [];
 
-    const errFn: ErrorCallback = response => firePageError(this, response);
+    const errFn: ErrorCallback = response => {
+      firePageError(this, response);
+    };
 
     promises.push(
       this._getLoggedIn().then(loggedIn => {
diff --git a/polygerrit-ui/app/elements/change-list/gr-dashboard-view/gr-dashboard-view.ts b/polygerrit-ui/app/elements/change-list/gr-dashboard-view/gr-dashboard-view.ts
index dbaed07..ce3a811 100644
--- a/polygerrit-ui/app/elements/change-list/gr-dashboard-view/gr-dashboard-view.ts
+++ b/polygerrit-ui/app/elements/change-list/gr-dashboard-view/gr-dashboard-view.ts
@@ -150,7 +150,9 @@
     project: RepoName,
     dashboard: DashboardId
   ): Promise<UserDashboard | undefined> {
-    const errFn = (response?: Response | null) => firePageError(this, response);
+    const errFn = (response?: Response | null) => {
+      firePageError(this, response);
+    };
     return this.$.restAPI
       .getDashboard(project, dashboard, errFn)
       .then(response => {
diff --git a/polygerrit-ui/app/elements/gr-app-element.ts b/polygerrit-ui/app/elements/gr-app-element.ts
index c15634b..2915acd 100644
--- a/polygerrit-ui/app/elements/gr-app-element.ts
+++ b/polygerrit-ui/app/elements/gr-app-element.ts
@@ -210,10 +210,12 @@
   created() {
     super.created();
     this._bindKeyboardShortcuts();
-    this.addEventListener(EventType.PAGE_ERROR, e => this._handlePageError(e));
-    this.addEventListener(EventType.TITLE_CHANGE, e =>
-      this._handleTitleChange(e)
-    );
+    this.addEventListener(EventType.PAGE_ERROR, e => {
+      this._handlePageError(e);
+    });
+    this.addEventListener(EventType.TITLE_CHANGE, e => {
+      this._handleTitleChange(e);
+    });
     this.addEventListener('location-change', e =>
       this._handleLocationChange(e)
     );