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-rw-r--r--apps/files_pdfviewer/js/pdfjs/viewer.js4
1 files changed, 4 insertions, 0 deletions
diff --git a/apps/files_pdfviewer/js/pdfjs/viewer.js b/apps/files_pdfviewer/js/pdfjs/viewer.js
index ff4f2452b60..8a568e6a749 100644
--- a/apps/files_pdfviewer/js/pdfjs/viewer.js
+++ b/apps/files_pdfviewer/js/pdfjs/viewer.js
@@ -1675,6 +1675,10 @@ function preDraw() {
function updateViewarea() {
if (!PDFView.initialized)
return;
+ var container = document.getElementById('viewer');
+ if (!container)
+ return;
+
var visiblePages = PDFView.getVisiblePages();
var pageToDraw;
for (var i = 0; i < visiblePages.length; i++) {