Erro eventual ao usar função get_series() about rbcb HOT 4 CLOSED

> df_indexador_bcb <- rbcb::get_series(código_indexador, start_date = (as.Date(paste(ano_reavaliacao, mes_reavaliacao, dia_reavaliacao, sep = "-")) %m-% months(13)),
+                                      end_date = (as.Date(paste(ano_reavaliacao, mes_reavaliacao, dia_reavaliacao, sep = "-")) %m-% months(1))) # Últimas 12 Variações do indexador
Skipping download - using cached version
Error in `map()`:
ℹ In index: 1.
ℹ With name: 433.
Caused by error in `parse_con()`:
! lexical error: invalid char in json text.
                                       <?xml version="1.0" encoding="p
                     (right here) ------^
Run `rlang::last_trace()` to see where the error occurred.
> rlang::last_trace()
<error/purrr_error_indexed>
Error in `map()`:
ℹ In index: 1.
ℹ With name: 433.
Caused by error in `parse_con()`:
! lexical error: invalid char in json text.
                                       <?xml version="1.0" encoding="p
                     (right here) ------^
---
Backtrace:
     ▆
  1. └─rbcb::get_series(...)
  2.   ├─rbcb::rbcb_get(objs, start_date, end_date, last)
  3.   └─rbcb:::rbcb_get.sgs(objs, start_date, end_date, last)
  4.     └─purrr::map_dfr(...)
  5.       └─purrr::map(.x, .f, ...)
  6.         └─purrr:::map_("list", .x, .f, ..., .progress = .progress)
  7.           ├─purrr:::with_indexed_errors(...)
  8.           │ └─base::withCallingHandlers(...)
  9.           ├─purrr:::call_with_cleanup(...)
 10.           └─rbcb (local) .f(.x[[i]], ...)
 11.             └─rbcb:::sgs_create_series(ser, f)
 12.               └─jsonlite::fromJSON(json)
 13.                 └─jsonlite:::parse_and_simplify(...)
 14.                   └─jsonlite:::parseJSON(txt, bigint_as_char)
 15.                     └─jsonlite:::parse_con(txt, bigint_as_char)