error deploying shiny app with shinyapps.io

I can't reproduce your issue, I have made this minimal app to test deployment and there is no problem with the links you have provided the app deploys and runs as expected.

library(shiny)
library(tidyverse)
library(lubridate)

positvos_url <- "https://cloud.minsa.gob.pe/s/Y8w3wHsEdYQSZRp/download"
muertes_url <- "https://cloud.minsa.gob.pe/s/Md37cjXmjT9qYSa/download"

positivos <- read.csv(positvos_url)
muertes <- read.csv(muertes_url)

ui = fluidPage(
  plotOutput("plot1"),
  plotOutput("plot2")
)

server <- function(input, output, session) {
  output$plot1 <- renderPlot({
    positivos %>% 
      mutate(FECHA_RESULTADO = dmy(FECHA_RESULTADO)) %>% 
      drop_na(FECHA_RESULTADO) %>% 
      count(FECHA_RESULTADO) %>% 
      ggplot(aes(x = FECHA_RESULTADO, y = n)) +
      geom_line()
  })
  
  output$plot2 <- renderPlot({
    muertes %>% 
      mutate(FECHA_FALLECIMIENTO = dmy(FECHA_FALLECIMIENTO)) %>% 
      drop_na(FECHA_FALLECIMIENTO) %>% 
      count(FECHA_FALLECIMIENTO) %>% 
      ggplot(aes(x = FECHA_FALLECIMIENTO, y = n)) +
      geom_line()
  })
}

shinyApp(ui, server)


Can you provide a reproducible example (reprex) illustrating your issue? Please have a look at this resources, to see how to create one for a shiny app