Rss errors

I have installed a new and fresh wordpress version on my server ( A VPS which I Own ).
But when I get to this link https://www.lionite.com/~oogiblog/?feed=rss2 (checking my RSS Feeds), I get an error as my feeds couldnt be validated.
There’s a whitespace on the top and I tried almost everything that was on the support forum to find out what would be the cause of this.

Please help me since this is driving me crazy.
thanks.