Error downloading bundle: Error fetching bundle: HTTP 599: Unknown

I am trying to deploy a Shiny app to shinyapps.io and am running into the following error:

ℹ Capturing R dependencies with renv
✔ Found 130 dependencies
✔ Created 5,338,665,651b bundle
ℹ Uploading bundle...
 [100%] Uploaded 5338665651 bytes...
✔ Uploaded bundle with id 8172142
── Deploying to server ──────────────────────────────────────────────────────────────────────────
Waiting for task: 1376704295
  error: Processing bundle: 8172142
## Begin Task Log ###############################################################################
## End Task Log #################################################################################
Error: Unhandled Exception: Child Task 1376704297 failed: Error downloading bundle: Error fetching bundle: HTTP 599: Unknown
In addition: Warning message:
invalid uid value replaced by that for user 'nobody'

It looks from the log above the total bundle size is a little over 5GB and I have the Standard plan on shinyapps.io, which should allow up to 8GB. I have increased the rsconnect.max.bundle.size and timeout options so they shouldn't be the limiting factors. Does anyone have any idea what else could be the issue?