Using Python selenium and ChromeDriver in a Shiny app

I have a shiny application that looks like this:

When the "Scrape" button is clicked, a Python function runs. This function uses selenium to navigate to the site of interest and proceeds to scrape its contents. To initialize the driver, I need to pass the path to the chrome driver to webdriver.Chrome(executable_path=path). Here is what this part of my Python function looks like:

from selenium import webdriver
import urllib3
import re
import time
import pandas as pd

def scrape(chromedriver="C:/Users/Robpr/OneDrive/Documents/chromedriver.exe"):
    # Create driver object. Opens browser
    driver = webdriver.Chrome(executable_path=chromedriver)

    # Rest of the function ...

I call this in my shiny server function like this:

server <- function(input, output, session) {
  # Scrape and store returned data frame from .py module in df()
  df = reactive({
    if (input$scrape) {
      dfii = sii$scrape(chromedriver="chromedriver.exe")
      dfii$`Filing Date` = as.Date(x=dfii$`Filing Date`, format="%B %d, %Y")
      write_sheet(dfii, ss=sheetId, sheet='filings')
    } else if (input$load) {
      read_sheet(ss=sheetId, sheet='filings')

    # Rest of the server function ...

This works beautifully locally. When I publish my app and try to click "Scrape", I get an error: "Error: An error has occurred. Check your logs or contact the app author for clarification.". So, I check my logs:

2021-07-02T18:51:07.355310+00:00 shinyapps[4346040]: Detailed traceback:
2021-07-02T18:51:07.355307+00:00 shinyapps[4346040]: Warning: Error in py_call_impl: WebDriverException: Message: 'chromedriver.exe' executable needs to be in PATH. Please see
2021-07-02T18:51:07.355310+00:00 shinyapps[4346040]: 
2021-07-02T18:51:07.355320+00:00 shinyapps[4346040]:   File "/home/shiny/.virtualenvs/statcanEnv/lib/python3.8/site-packages/selenium/webdriver/chrome/", line 73, in __init__
2021-07-02T18:51:07.355311+00:00 shinyapps[4346040]:     driver = webdriver.Chrome(executable_path=chromedriver)
2021-07-02T18:51:07.355311+00:00 shinyapps[4346040]:   File "/srv/connect/apps/StatCanWebScrapingApp/", line 11, in scrape
2021-07-02T18:51:07.355321+00:00 shinyapps[4346040]:     self.service.start()
2021-07-02T18:51:07.355321+00:00 shinyapps[4346040]:     raise WebDriverException(
2021-07-02T18:51:07.355321+00:00 shinyapps[4346040]:   File "/home/shiny/.virtualenvs/statcanEnv/lib/python3.8/site-packages/selenium/webdriver/common/", line 81, in start
2021-07-02T18:51:07.355322+00:00 shinyapps[4346040]: 
2021-07-02T18:51:07.362398+00:00 shinyapps[4346040]:   135: <Anonymous>

I've published the chromedriver.exe file along with my app and module: image

How can I get this to work on the server?