From 3572ba837ddd8f9744a9f9414df6fe039beef66c Mon Sep 17 00:00:00 2001
From: softsimon <softsimon@protonmail.com>
Date: Thu, 1 Dec 2022 23:12:02 +0900
Subject: [PATCH] Fix for javascript errors when navigating blocks

---
 .../block-overview-graph/block-overview-graph.component.ts     | 2 ++
 .../transactions-list/transactions-list.component.ts           | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts b/frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts
index 6da576e99..37225ea1d 100644
--- a/frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts
+++ b/frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts
@@ -77,6 +77,8 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
       cancelAnimationFrame(this.animationFrameRequest);
       clearTimeout(this.animationHeartBeat);
     }
+    this.canvas.nativeElement.removeEventListener('webglcontextlost', this.handleContextLost);
+    this.canvas.nativeElement.removeEventListener('webglcontextrestored', this.handleContextRestored);
   }
 
   clear(direction): void {
diff --git a/frontend/src/app/components/transactions-list/transactions-list.component.ts b/frontend/src/app/components/transactions-list/transactions-list.component.ts
index 072d71311..8b4fabf6e 100644
--- a/frontend/src/app/components/transactions-list/transactions-list.component.ts
+++ b/frontend/src/app/components/transactions-list/transactions-list.component.ts
@@ -91,6 +91,9 @@ export class TransactionsListComponent implements OnInit, OnChanges {
             filter(() => this.stateService.env.LIGHTNING),
             switchMap((txIds) => this.apiService.getChannelByTxIds$(txIds)),
             tap((channels) => {
+              if (!this.transactions) {
+                return;
+              }
               const transactions = this.transactions.filter((tx) => !tx._channels);
               channels.forEach((channel, i) => {
                 transactions[i]._channels = channel;