Create refreshable database and TDE wallet ends with ORA-28353

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Hi,

I have two 18.2 Oracle database as Database VM in OCI. 
When I've tried create refreshable pluggable database I have error like below:

 

SQL> CREATE PLUGGABLE DATABASE pdb2_ro FROM pdb1@cdb1.sub09280929140.databasenetwork.oraclevcn.com keystore identified by "******";
CREATE PLUGGABLE DATABASE pdb2_ro FROM pdb1@cdb1.sub09280929140.databasenetwork.oraclevcn.com keystore identified by "****"
*
ERROR at line 1:
ORA-28353: failed to open wallet

 

This is not password issue for wallet as when I've put wrong password I have error ORA-46627: keystore password mismatch.
I've change nothing in default wallets used for TDE,

Could you tell me what could be a reason?