Welcome to the forum!
Support for SVG varies quite a lot among different image viewers and browsers. So even if we can fix that code, your image still might not be displayed properly. Although having said that, the part of the code that you're showing is not part of the image. It's more for the browser or image viewer.
I'm not familiar enough with XML code to be able to either recognize what's wrong, or to fix it. But I can probably give you some clues, and ask some questions whose answers might help other members to answer.
I do know some simple HTML though, so at least I understand some basic things. One thing that I notice on line 25 that I've never seen in looking at HTML/XML, is where it says: begin="ÿ"
That "y" with the 2 dots above it, is not a character that I recognize as valid code. Although I'll say again that I'm not an expert at all.
I also notice "Adobe" in that metadata, and I don't know why it would be there, if the image was made entirely in Inkscape. Was it made from a pre-existing PDF maybe? Or AI file? Oh ok, after some brief search, that is metadata from a Photoshop image or file.
My best guess is the conversion from whatever came from PS is causing this problem. Does that ring any bells? Is there something from PS that could be deleted?
If you could share the SVG file with us, we could test and investigate more fully. But if you can't share it, we can keep with the Q and A routine.
