Referencing issue for Rmarkdown - r

Question

I'm trying to link figures throughout my R Markdown file and I keep getting the error when I try to knit the profile:
[WARNING] Citeproc: citation Picture not found
Further, when I try to cite using #chunk-name, the output produces a result such as chunk-name? with a question mark.
I have tried to solve this error by downloading pandoc due to some internet searching but absolutely nothing has helped me. Anything regarding this error message would be helpful.
I have attached a code of my YAML if it's of any help:
Apologies I don't know how to attach it as a code without the lines coalescing.
Example of GG Plot I was trying to create:
```{r Picture , fig.asp=0.5, out.width= "100%", warning=FALSE, message=FALSE, fig.cap= " Student's grade count vs planning "}
library(ggplot2)
ggplot(qn1frame, aes(x=(hourly_plan), fill=category
)) + geom_bar() + theme_bw(base_size = 12) + scale_fill_brewer(palette = "Set1") +
labs(fill = "Grades", y = "Proportion", x = "ewuhrwe") + plot_layout(guides = 'collect') +
plot_annotation(tag_levels = 'A')
ggplot(qn1frame, aes(x=(hourly_plan), fill=category
)) + geom_bar(aes(stat="identity"), position= "fill") + theme_bw(base_size = 12) + scale_fill_brewer(palette = "Set1") +
labs(fill = "Grades", y = "Proportion", x = "Occupational exposure (yrs)") + plot_layout(guides = 'collect') + plot_annotation(tag_levels = 'A')
```
How I've been trying to create a citation back to this graph:
Testing captions:
Referring to #Picture..
However, I get the WARNING output when I render the file as well as in the actual code I get: (Picture?) when I tag it. Any help would be immensely helpful.
Thank you!

Answer 1

You are having the question mark sign ?? instead of a reference because you are trying to refer from a code chunk that generates two figures. So when you use `#ref(fig:chunk-name) to refer to the figures, it gets confused as to which figure to refer to.
So one option could be using a separate chunk for each plot. Or if you want to generate multiple plots from the same chunk, you need to refer them with \#ref(fig:chunk-name-1), \#ref(fig:chunk-name-2) etc.
Reproducible Example
---
title: "Cross Referencing"
output:
bookdown::html_document2:
self_contained: yes
code_folding: hide
code_download: yes
toc: yes
toc_float: yes
number_sections: yes
fig_caption: TRUE
link-citations: true
link-references: true
date: "2022-09-16"
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
library(ggplot2)
```
## R Markdown
```{r}
#| cars-plot,
#| fig.cap=c("Displacement vs Miles per gallon", "HP vs Miles per gallon"),
#| echo=FALSE,
#| fig.height=3,
#| fig.width=4
ggplot(mtcars, aes(mpg, disp)) +
geom_point()
ggplot(mtcars, aes(mpg, hp)) +
geom_point()
```
Testing captions:
Referring to \#ref(fig:cars-plot-1) and \#ref(fig:cars-plot-2)