A PS5 param.json keeps defaultLanguage inside localizedParameters, next to
the language entries. The parser looked for it at the root only, then fell
back to en-US and to the first member, which is the defaultLanguage string
when no en-US entry exists (PPSA12544 has only en-GB), and threw
"expected JSON object". defaultLanguage is now read from
localizedParameters first, and the fallback takes the first language
object.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Merijn
Tomás Ortellado