Inkplate 10 'Bad file number' error on image download

[tommyalatalo]

I'm trying to set up an Inkplate 10 (v2), and I'm hosting a home assistant dashboard screenshot using sibbl/hass-lovelace-kindle-screensaver with the below configuration.

The firmware is successfully flashed to the device and the display shows "HomePlate" after flashing, but when the process tries to download the image from the server I get the error below. Why is this? Is the image server misconfigured somehow? I'm not sure what to make of the message Bad file number. I can successfully download the png image from the server using wget, curl or a web browser.

Full log from startup: https://0x0.st/X82m.txt

09:16:54.937 > [IMAGE] Downloading image: http://hass-inkplate.example.com
09:16:54.940 > [  6942][E][WiFiClient.cpp:320] setSocketOption(): fail on -1, errno: 9, "Bad file number"
09:16:59.960 > [IMAGE] Download failed
09:16:59.960 > [STATUS] Download failed!

HA_BASE_URL=https://homeassistant.example.com
HA_SCREENSHOT_URL=/dashboard-inkplate/0?kiosk
HA_ACCESS_TOKEN={{}}
CRON_JOB=* * * * *
RENDERING_TIMEOUT=30000
RENDERING_DELAY=0
RENDERING_SCREEN_HEIGHT=820
RENDERING_SCREEN_WIDTH=1200
GRAYSCALE_DEPTH=5
OUTPUT_PATH=/output
LANGUAGE=en
ROTATION=0
SCALING=1