How to fix error >>> DBMS_AW_EXP: BIN$DdyrY during export

During export using data pump, you see the following:

Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 7.968 GB
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/TABLESPACE_QUOTA
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/SEQUENCE/SEQUENCE
>>> DBMS_AW_EXP: BIN$DdyrY/cyAMLgU5/YLVaAbg==$0 not AW$

Solution: empty the recyclebin:

purge dba_recyclebin;

and restart the export.