java.lang.NullPointerException:

I am getting the following error with the code below: ‘java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.revenuecat.purchases.EntitlementInfo.isActive()' on a null object reference’

Purchases.getSharedInstance().getCustomerInfo(new ReceiveCustomerInfoCallback() {
            @Override
            public void onReceived(@NonNull CustomerInfo customerInfo) {
                Log.i("RevenueCat", String.valueOf(customerInfo.getEntitlements()));
                Log.i("RevenueCat", String.valueOf(customerInfo.getEntitlements().getAll()));
                if (customerInfo.getEntitlements().get(premiumEntitlementID).isActive()) {
                    sharedPreferences.edit().putBoolean("premium", true).apply();
                }
                else {
                    sharedPreferences.edit().putBoolean("premium", false).apply();
                }
            }

            @Override
            public void onError(@NonNull PurchasesError purchasesError) {
                Log.i("RC error", String.valueOf(purchasesError));
            }
        });

.getEntitlements() is returning an empty dictionary too.

SDK version 5.4.0

Please could someone help me resolve this?