Lab "API Gateway: Qwik Start" of Level 1 May is Not Starting

[Obsidian]

I have completed all the labs of level 1 May, except API Gateway : Qwik Start. When I click on it, the link doesn't redirect me to the lab tab, nor does it light up when i hover over it.  
In the attached screenshot         the difference is clearly visible. Has anyone encountered the same problem? Or is it just me.