Errors

  [UTF8]      err-utf8-encode       err-utf8-decode
  [J8 String] err-j8-str-encode     err-j8-str-decode
  [J8 Lines]  err-j8-lines-encode   err-j8-lines-decode
  [JSON]      err-json-encode       err-json-decode
  [JSON8]     err-json8-encode      err-json8-decode
