Failed to load generated key pair from keystore

[violet7]

Brand: LeEco
Model: LEX720
Version: 7.1.2
Orientation: Portrait
Rooted: No

Fatal Exception: java.security.ProviderException
Failed to load generated key pair from keystore

Caused by java.security.UnrecoverableKeyException
Failed to obtain X.509 form of public key

Caused by android.security.KeyStoreException
-22

android.security.KeyStore.getKeyStoreException (KeyStore.java:676)
android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStorePublicKeyFromKeystore (AndroidKeyStoreProvider.java:231)
android.security.keystore.AndroidKeyStoreProvider.loadAndroidKeyStoreKeyPairFromKeystore (AndroidKeyStoreProvider.java:259)
android.security.keystore.AndroidKeyStoreKeyPairGeneratorSpi.loadKeystoreKeyPair (AndroidKeyStoreKeyPairGeneratorSpi.java:509)
android.security.keystore.AndroidKeyStoreKeyPairGeneratorSpi.generateKeyPair (AndroidKeyStoreKeyPairGeneratorSpi.java:470)
java.security.KeyPairGenerator$Delegate.generateKeyPair (KeyPairGenerator.java:699)
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com.q42.qlassified.Provider.QlassifiedKeyStore.createKeys (QlassifiedKeyStore.java:109)
com.q42.qlassified.Provider.QlassifiedKeyStore.checkKeyAvailability (QlassifiedKeyStore.java:154)
com.q42.qlassified.Provider.QlassifiedKeyStore.encrypt (QlassifiedKeyStore.java:169)
com.q42.qlassified.Provider.QlassifiedKeyStore.encryptEntry (QlassifiedKeyStore.java:119)
com.q42.qlassified.QlassifiedFactory.put (QlassifiedFactory.java:70)
com.q42.qlassified.Qlassified.put (Qlassified.java:120)