learnr and tblcheck package

I am creating a interactive shiny app for grading student solution. Follwoing is my code:
Read the file person.csv and store the result in a tibble called person.

```{r q8a, exercise=TRUE}

person <- read.csv("person.csv")

  # custom checking code appears here
  if (identical(person, read.csv("person.csv"))) {
When I am running above code I amgetting error as "conncetion error". can somebody helped my how can i create a interactive shiny app where i can grade student code with solution code?

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