My builds always incorrectly report coverage to be 0%

I'm running my tests using Github Actions, and posting the report using the github action in this repo. I'm generating my reports using NYC, and I can confirm the report is there because I cat it right after the tests are done. However, my builds always say the coverage is on 0%, and the file list is empty.
My repo is private so I cannot share any links here, but here are some screenshots to help explain what I see in coveralls:

The build #11 was uploaded using the node-coveralls script directly from my machine, and it worked.

Here are the first 200 lines of my coverage report:

TN:
SF:api-server.js
FN:32,displayMessage
FN:65,(anonymous_1)
FN:66,logResponse
FN:67,(anonymous_3)
FN:74,(anonymous_4)
FN:103,(anonymous_5)
FNF:6
FNH:1
FNDA:0,displayMessage
FNDA:0,(anonymous_1)
FNDA:0,logResponse
FNDA:0,(anonymous_3)
FNDA:0,(anonymous_4)
FNDA:1,(anonymous_5)
DA:26,1
DA:27,1
DA:28,1
DA:29,1
DA:30,1
DA:33,0
DA:35,0
DA:36,0
DA:38,0
DA:39,0
DA:41,0
DA:42,0
DA:44,0
DA:45,0
DA:47,0
DA:48,0
DA:50,0
DA:51,0
DA:54,0
DA:55,0
DA:58,0
DA:61,0
DA:65,1
DA:66,0
DA:67,0
DA:68,0
DA:71,0
DA:74,0
DA:75,0
DA:76,0
DA:77,0
DA:78,0
DA:80,0
DA:81,0
DA:93,0
DA:94,0
DA:103,1
DA:104,1
DA:107,1
DA:108,0
LF:40
LH:9
BRDA:38,0,0,0
BRDA:38,0,1,0
BRDA:41,1,0,0
BRDA:41,1,1,0
BRDA:44,2,0,0
BRDA:44,2,1,0
BRDA:47,3,0,0
BRDA:47,3,1,0
BRDA:50,4,0,0
BRDA:50,4,1,0
BRDA:80,5,0,0
BRDA:80,5,1,0
BRDA:104,6,0,0
BRDA:104,6,1,1
BRDA:107,7,0,0
BRDA:107,7,1,1
BRF:16
BRH:2
end_of_record
TN:
SF:config.test.js
FNF:0
FNH:0
DA:1,1
LF:1
LH:1
BRF:0
BRH:0
end_of_record
TN:
SF:smylen.config.test.js
FNF:0
FNH:0
DA:1,1
LF:1
LH:1
BRF:0
BRH:0
end_of_record
TN:
SF:jobs/JobsQueueFake.js
FN:2,(anonymous_0)
FN:5,(anonymous_1)
FN:8,(anonymous_2)
FN:12,(anonymous_3)
FN:15,(anonymous_4)
FN:18,(anonymous_5)
FN:21,(anonymous_6)
FNF:7
FNH:0
FNDA:0,(anonymous_0)
FNDA:0,(anonymous_1)
FNDA:0,(anonymous_2)
FNDA:0,(anonymous_3)
FNDA:0,(anonymous_4)
FNDA:0,(anonymous_5)
FNDA:0,(anonymous_6)
DA:1,1
DA:9,0
DA:22,0
DA:24,0
DA:26,0
LF:5
LH:1
BRDA:22,0,0,0
BRDA:22,0,1,0
BRF:2
BRH:0
end_of_record
TN:
SF:jobs/helpers/DayGenerater.js
FN:3,(anonymous_0)
FN:7,(anonymous_1)
FN:11,(anonymous_2)
FN:15,(anonymous_3)
FN:19,(anonymous_4)
FN:23,(anonymous_5)
FN:27,(anonymous_6)
FNF:7
FNH:0
FNDA:0,(anonymous_0)
FNDA:0,(anonymous_1)
FNDA:0,(anonymous_2)
FNDA:0,(anonymous_3)
FNDA:0,(anonymous_4)
FNDA:0,(anonymous_5)
FNDA:0,(anonymous_6)
DA:4,0
DA:8,0
DA:12,0
DA:16,0
DA:20,0
DA:24,0
DA:28,0
DA:32,1
LF:8
LH:1
BRF:0
BRH:0
end_of_record
TN:
SF:jobs/processors/AdjustCompanySubscription.js
FN:6,(anonymous_0)
FN:12,(anonymous_1)
FNF:2
FNH:0
FNDA:0,(anonymous_0)
FNDA:0,(anonymous_1)
DA:1,1
DA:2,1
DA:7,0
DA:8,0
DA:9,0
DA:13,0
DA:14,0
DA:15,0
DA:25,1
LF:9
LH:3
BRF:0
BRH:0
end_of_record
TN:
SF:jobs/processors/BulkEnrollment.js

Running the action like this:

- name: Coveralls GitHub Action
      uses: coverallsapp/github-action@v1.1.2
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        path-to-lcov: ${{ github.workspace }}/api/coverage/lcov.info

Note that path to lcov.info must be correct because if it is not it throws an Error

Any ideas? We have tried everything we saw documented with no luck.