This is likely an issue of the paths in the report not matching the paths analysis sees.
In fact, that seems to be the case for multiple reports:
18:26:46.523 INFO Analysing [/github/workspace/node_modules/stream-buffers/coverage/lcov.info, /github/workspace/packages/my-app/coverage/lcov.info]
18:26:46.540 WARN Could not resolve 8 file paths in [/github/workspace/node_modules/stream-buffers/coverage/lcov.info, /github/workspace/packages/my-app/coverage/lcov.info]
18:26:46.540 WARN First unresolved path: /home/travis/build/samcday/node-stream-buffer/lib/streambuffer.js (Run in DEBUG mode to get full list of unresolved paths)
18:26:46.540 INFO Sensor JavaScript/TypeScript Coverage [javascript] (done) | time=1401ms
18:26:46.542 INFO Sensor Import of ESLint issues [javascript]
18:26:46.542 INFO Importing /github/workspace/./packages/my-app/eslint.report.json
18:26:46.543 WARN No input file found for /home/runner/work/expo-experiments/expo-experiments/packages/my-app/__mocks__/@react-native-async-storage/async-storage.ts. No ESLint issues will be imported on this file.
18:26:46.544 WARN No input file found for /home/runner/work/expo-experiments/expo-experiments/packages/my-app/__mocks__/react-native-file-viewer.ts. No ESLint issues will be imported on this file.
You’re sure the files exist, but do they exist at those paths? What are the paths, relative to where analysis is run from?