slideshow doesn't working

[kikd]

Description
Slideshow feature doesn't working on Chrome and Firefox.

Version
v1.13.1

Environment

• OS: Windows 10 (OS build: 17134.706)
• Browser : Chrome(version 74.0.3729.131), Firefox(version 66.0.5)

To reproduce

1. access to Slide show sample
2. press the slide show button.

Expected behavior
Browser toggle full screen mode, and begin slide show.

Actual behavior
[Chrome]
Browser cannot toggle to full screen mode with some error.
Developer console displays error message below.

4?offset=0:1 Uncaught (in promise) TypeError: Failed to execute 'requestFullscreen' on 'Element': parameter 1 ('options') is not an object.
    at HTMLAnchorElement.onclick (4?offset=0:1)
onclick @ 4?offset=0:1

[Firefox]
Browser toggle to full screen mode, but slideshow isn't start as below.

Remarks
Presentation occurs same issue.

[nus]

I create a pull request for fixing this issue.