Hi @kryganas
Unfortunately I'm experiencing the same issue right now, with similar errors in Firefox console.
I've tried turning off uBlock, also switching from Firefox to MS Edge, but same thing happens for any download I've tried.
Looks like ESRI may be having some maintenance right now.
thanks for bringing this to our attention. We will look into this
now i can download
Yep, in my case now I'm also able to download SDKs.
Thank you!