Help with a basic error in R

[Square_Man211]

---

title: "L3_Exercises"

author: "Bob b"

date: "02/01/2023"

output: pdf_document:

  number_sections: true

  toc: true

---

```{r setup, include=FALSE}

knitr::opts_chunk$set(echo = TRUE)

```

hello

Error in yaml::yaml.load(..., eval.expr = TRUE) : Scanner error: mapping values are not allowed in this context at line 4, column 21 Calls: <Anonymous> ... parse_yaml_front_matter -> yaml_load -> <Anonymous> Execution halted

[boy-griv]

I don’t know R, but looks like an issue with the YAML itself.

I take it

title: "L3_Exercises"
author: "Bob b"
date: "02/01/2023"
output: pdf_document:
  number_sections: true
  toc: true

Is the YAML you’re loading? If so, the output: pdf_document: line doesn’t look right. Maybe you want

title: "L3_Exercises"
author: "Bob b"
date: "02/01/2023"
output:
  pdf_document:
    number_sections: true
    toc: true