The symbol on line 2135, column 37 (position 70675) in assets/minecraft/texts/credits.json is a left double quotation mark (“, U+201C), instead of a right double quotation mark (”, U+201D)

The line is:
"Michael “Mikaus“ Whiteley",
While it should be:
"Michael “Mikaus” Whiteley",

This may not be noticeable here on the bug tracker, because the font of this website seems to unify the two symbols as ". Check this image for reference.