React-Native Simple Store Error: Unable to load RocksDB, SQLite, or AsyncLocalStorage

When running a basic app that uses react-native-simple-store I get the following error (the same as this unsolved question):

undefined is not an object (evaluating 'RCTAsyncStorage.multimerge')

<unkown>
AsyncStorage.js:325:21
...

Digging into AsyncStorage.js I find that the issue is here:

// Not all native implementations support merge.
if (!RCTAsyncStorage.multiMerge) {
  delete AsyncStorage.mergeItem;
  delete AsyncStorage.multiMerge;
}

RCTAsyncStorage is not undefined. The attempt to define RCTAsyncStorage comes at the beginning of the same file.

const NativeModules = require('../BatchedBridge/NativeModules');

// Use RocksDB if available, then SQLite, then file storage.
const RCTAsyncStorage = NativeModules.AsyncRocksDBStorage ||
  NativeModules.AsyncSQLiteDBStorage ||
  NativeModules.AsyncLocalStorage;

Finally, I checked NativeModules.AsyncRocksDBStorage, NativeModules.AsyncSQLiteDBStorage, and NativeModules.AsyncLocalStorage—surely enough, all of them were undefined. The file from which they are supposed to be loaded (NativeModules) is a bit difficult to understand, so I stopped tracing there.

Please let me know if you know what I could be doing wrong!

from React-Native Simple Store Error: Unable to load RocksDB, SQLite, or AsyncLocalStorage