From ce0d744a108012579186a303e0677444f0a94131 Mon Sep 17 00:00:00 2001
From: davidiamaf <69973801+davidiamaf@users.noreply.github.com>
Date: Thu, 27 Aug 2020 16:15:09 -0400
Subject: [PATCH] guard for null

 against map.getPixelFromCoordinateInternal() returning null

Per https://github.com/openlayers/openlayers/issues/11478
---
 src/ol/Overlay.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ol/Overlay.js b/src/ol/Overlay.js
index 62b8d4d342..242aaad17f 100644
--- a/src/ol/Overlay.js
+++ b/src/ol/Overlay.js
@@ -458,6 +458,9 @@ class Overlay extends BaseObject {
           .getView()
           .getCenterInternal());
         const centerPx = map.getPixelFromCoordinateInternal(center);
+        if (!centerPx) {
+          return;
+        }
         const newCenterPx = [centerPx[0] + delta[0], centerPx[1] + delta[1]];
 
         const panOptions = panIntoViewOptions.animation || {};