Test 4 fails because of missing nadgrid file or buffer

[murithigeo]

trace:

Unable to find mandatory grid 'uk_os_OSTN15_NTv2_OSGBtoETRS.tif'
▶ #load
  ✖ should load data from epsg.io (822.633ms)
    AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:
    + actual - expected

    + 'NaN'
    - '429158'
        at assertAlmostEqual (C:\Users\<>\Desktop\projects\uriproj\test\util.ts:4:10)
        at <anonymous> (C:\Users\<>\Desktop\projects\uriproj\test\simple.test.ts:41:7)
        at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
        at async Test.run (node:internal/test_runner/test:797:9)
        at async Promise.all (index 0)
        at async Suite.run (node:internal/test_runner/test:1135:7)
        at async Test.processPendingSubtests (node:internal/test_runner/test:527:7) {
      generatedMessage: true,
      code: 'ERR_ASSERTION',
      actual: 'NaN',
      expected: '429158',
      operator: 'strictEqual'
    }