Reprex for learnr issue: setup: error when two exercise chunks depend on one setup chunk

reprex2.Rmd

---
title: "Tutorial"
output: learnr::tutorial
runtime: shiny_prerendered
---

```{r setup, include=FALSE}
library(learnr)
```


## Topic 2
```{r read}
### To install the ddj package run:
# devtools::install_github("school-of-data/r-consortium-proposal", subdir="r-package")

data(introduction_raw, package = "ddj")
```

## Topic 3
Check out the names of the results data.frame.
```{r ex_look1, exercise=TRUE, exercise.setup = "read"}

```

```{r ex_look1-solution}
names(results)
```

Check out the names of the demographic1 data.frame.
```{r ex_look2, exercise=TRUE, exercise.setup = "read"}
```

```{r ex_look2-solution}
names(demographic1)
```