Search adapter class is not provided

So when I try to push my local files to the git repository, I get this error:
Summary of all failing tests
FAIL core/lib/search/adapter/test/unit/searchAdapterFactory.spec.ts (5.028s)
● Search adapter factory tests › Search adapter constructor called always only once

    Search adapter class is not provided

      27 |
      28 |   if (!SearchAdapter) {
    > 29 |     throw new Error('Search adapter class is not provided')
         |           ^
      30 |   }
      31 |
      32 |   if (instances[adapterName]) {

      at _callee$ (core/lib/search/adapter/searchAdapterFactory.js:29:11)
      at tryCatch (node_modules/regenerator-runtime/runtime.js:45:40)
      at Generator.invoke [as _invoke] (node_modules/regenerator-runtime/runtime.js:271:22)
      at Generator.prototype.<computed> [as next] (node_modules/regenerator-runtime/runtime.js:97:21)
      at asyncGeneratorStep (core/lib/search/adapter/searchAdapterFactory.js:14:103)
      at _next (core/lib/search/adapter/searchAdapterFactory.js:16:194)

I can’t figure out what is failing, and how to fix this - any ideas?