Image button in CKEditor gives a blank screen

1. Launch CMS and Login
2. Go to "Experience Manager" perspective
3. Go to the "Hippo Acceptance Project" channel
4. Open Xmas tree document page
5. Click the "Edit document" button with the document icon in orange color
6. Go to the introduction field which is basically a CKEditor HTML section.
7. Click an empty space for editing the field
8. Then In CK Editor, click the image icon in toolbar

Actual Result : Page goes blank with error in console

Expected Result : Page should display without any error

Screen recording :  recording