when deploying my app to shiny.io: Error in : pandoc document conversion failed with error 99

Dear all,

When I deploy my shiny app, I am receiving this error "pandoc document conversion failed with error 99". The shiny app analyzes uploaded or example datasets and the user can download the report. I am receiving this error when I click on the Download report which is generated by RMarkdown button. I am attaching the RMarkdown document. Thanks.

---
title: "ROC Analysis Report"
output: 
  html_document:
    css: styles.css
    toc: true
    toc_float: true
    number_sections: false
    theme: lumen
    highlight: textmate
    class: 'center'
params:
  roc_plot: NA
  roc_table: NA
  chatgpt_interpretation: NA
  chatgpt_interpretationPL: NA
  sales_text: NA
  cl_dist_plot: NA
  cht_int_cls: NA
  pred_dist_plot: NA
  cht_pred_cls: NA
  combined_placeholder: NA
  chatgpt_int: NA
  int_text: NA
---

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = FALSE)
library(ggplot2)
library(grid)
library(knitr)
library(kableExtra)

```
## 1. INTRODUCTION

```{r}
params$chatgpt_int
 
```

## 2.RESULTS
```{r}
params$sales_text

```
Note that the after running scispace API, we will enrich this Introduction part.


### Data quality checking

```{r dist-plot, fig.cap="Figure 1: Distribution of biomarker.", echo=FALSE, warning=FALSE, message=FALSE}

# The `params` object is available in the document.
plot(params$pred_dist_plot)

```

```{r}
# The `params` object is available in the document.
params$cht_pred_cls
```

```{r, fig.cap="Figure 2: Class distributions of the output.", warning=FALSE, message=FALSE,warning=FALSE, message=FALSE}

# The `params` object is available in the document.
plot(params$cl_dist_plot)
```

```{r}
# The `params` object is available in the document.
params$cht_int_cls
```

### ROC plot
```{r, fig.cap="Figure 3: ROC plot of the analysis.", warning=FALSE, message=FALSE,warning=FALSE, message=FALSE}
# The `params` object is available in the document.
plot(params$roc_plot)
```

```{r}
# The `params` object is available in the document.
params$chatgpt_interpretationPL
```

### Performance measures
```{r}
knitr::kable(params$roc_table, caption = "Table 1: Performance measures of the ROC analysis.", format = "html") %>%
  kable_styling()
```

```{r}
# The `params` object is available in the document.
params$chatgpt_interpretation
```

## 3. CONCLUSIONs
```{r}
params$combined_placeholder
```

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