[BUG] - "The first argument must be one of type [...]" while downloading SpkrFrkr-SPKR_FRKR_MIXTAPE-0.0.6

[19tracks]

Describe the bug
When trying to update my PEAK mods, one huge mod always causes an error. The download is 3.5 GB, and after the progress bar is full, r2modman displays the following error message:

Error

Failed to download mod SpkrFrkr-SPKR_FRKR_MIXTAPE-0.0.6

The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type object

It offers a button to retry. Retrying has always produced the same result for me. I've never successfully downloaded this mod, and I don't have it installed; it seems to be a new dependency of PEAK_REDUX, blocking me from updating PEAK_REDUX.

When I try to make a new profile from the same code, the result is similar, but the error message just says "Network Error". I was also able to reproduce the error (with the longer message) by making a new profile and downloading PEAK_REDUX.

To Reproduce
Steps to reproduce the behavior:

1. Select the game PEAK
2. Click "Create new" to create an empty profile
3. Enter whatever name you like
4. Click "Create"
5. Click "Select profile" to select the profile you've just created
6. Click "Online" under "Mods"
7. Click the "Search" text box and enter "PEAK_REDUX"
8. Click "PEAK_REDUX" by SpkrFrkr
9. Click "Download"
10. Wait for the download to complete
11. See error

Expected behavior
I expect PEAK_REDUX and all of its dependencies to be installed without being interrupted by an error.

Screenshots

Additional context
I'm using r2modman 3.2.8 on Arch Linux, installed from the AUR package "r2modman-bin," which is just a script that downloads and extracts the .pacman GitHub release asset from this repository. This is the latest official build.