Hello,
I am upgrading a pretty old project build on Ionic/Cordova/Angular with latest packages, and I am encourteing an issue on Android.
I upgraded my project to ionic 6 and Angular 14. I also upgraded all plugins with @awesome-cordova-plugins.
RevenueCat plugins are also updated.
package.json:
```
"@awesome-cordova-plugins/purchases": "^6.2.0",
"cordova-plugin-purchases": "^3.3.3",
```
Everything works fine on iOS.
I ran into an issue when I try to build for Android
I upgraded minSdk to 31, and installed JDK 11.
Ionic documentation says we must use JDK 8, but I can’t build anything too because it needs sdk >= 31.
config.xml:
```
<preference name="android-minSdkVersion" value="22" />
<preference name="android-targetSdkVersion" value="31" />
<preference name="android-compileSdkVersion" value="31" />
```
terminal:
```
[cordova] /Users/user/Sites/project/ionic/platforms/android/app/src/main/java/cc/fovea/PurchasePlugin.java:386: error: cannot find symbol
[cordova] if (p.getSku().equals(sku))
[cordova] ^
[cordova] symbol: method getSku()
[cordova] location: variable p of type Purchase
[cordova] /Users/user/Sites/project/ionic/platforms/android/app/src/main/java/cc/fovea/PurchasePlugin.java:554: error: cannot find symbol
[cordova] params.setOldSku(oldSku, oldPurchaseToken);
[cordova] ^
[cordova] symbol: method setOldSku(String,String)
[cordova] location: variable params of type Builder
[cordova] /Users/user/Sites/project/ionic/platforms/android/app/src/main/java/cc/fovea/PurchasePlugin.java:587: error: cannot find symbol
[cordova] params.setReplaceSkusProrationMode(BillingFlowParams.ProrationMode.IMMEDIATE_WITH_TIME_PRORATION);
[cordova] ^
[cordova] symbol: method setReplaceSkusProrationMode(int)
[cordova] location: variable params of type Builder
[cordova] /Users/user/Sites/project/ionic/platforms/android/app/src/main/java/cc/fovea/PurchasePlugin.java:589: error: cannot find symbol
[cordova] params.setReplaceSkusProrationMode(BillingFlowParams.ProrationMode.IMMEDIATE_AND_CHARGE_PRORATED_PRICE);
[cordova] ^
[cordova] symbol: method setReplaceSkusProrationMode(int)
[cordova] location: variable params of type Builder
[cordova] /Users/user/Sites/project/ionic/platforms/android/app/src/main/java/cc/fovea/PurchasePlugin.java:591: error: cannot find symbol
[cordova] params.setReplaceSkusProrationMode(BillingFlowParams.ProrationMode.IMMEDIATE_WITHOUT_PRORATION);
[cordova] ^
[cordova] symbol: method setReplaceSkusProrationMode(int)
[cordova] location: variable params of type Builder
[cordova] /Users/user/Sites/project/ionic/platforms/android/app/src/main/java/cc/fovea/PurchasePlugin.java:593: error: cannot find symbol
[cordova] params.setReplaceSkusProrationMode(BillingFlowParams.ProrationMode.DEFERRED);
[cordova] ^
[cordova] symbol: method setReplaceSkusProrationMode(int)
[cordova] location: variable params of type Builder
[cordova] /Users/user/Sites/project/ionic/platforms/android/app/src/main/java/cc/fovea/PurchasePlugin.java:629: error: cannot find symbol
[cordova] + " Replace old SKU? " + (params.getOldSku() != null));
[cordova] ^
[cordova] symbol: method getOldSku()
[cordova] location: variable params of type BillingFlowParams
[cordova] Note: Some input files use or override a deprecated API.
[cordova] Note: Recompile with -Xlint:deprecation for details.
[cordova] Note: Some input files use unchecked or unsafe operations.
[cordova] Note: Recompile with -Xlint:unchecked for details.
[cordova] 7 errors
[cordova]
[cordova] FAILURE: Build failed with an exception.
```
Any idea what is causing this problem?
