Formatea y valida JSON en una vista vertical para recorrer objetos y arrays anidados con claridad. Revisa respuestas de API, configura datos y copia solo el fragmento que necesitas.
The following causes will cause JSON to fail.
It's hard for you to find out the wrong reason:
Non-number type keys in 1,JSON string without double quotes
There's a tab like \t in JSON, which looks like a space, but it's because of its existence, which leads to a failure to verify, just remove it.
Three, Bom's head in the editor will cause JSON to fail.