expdp Error when exporting expdp

the RAC version is 19.4,The expdp tool reports an error when exporting the PDB in the CDB in another set of cluster ADG

Processing object type DATABASE_EXPORT/RADM_FPTM

Processing object type DATABASE_EXPORT/NORMAL_OPTIONS/TABLE_DATA

ORA-39127: unexpected error from call to BEGIN :1 :=SYS.DBMS_DM_MODEL_EXP.GRANT_SYSPRIVS_EXP(19.00.00.00.00,:3); END;

ORA-22303: type "SYS"."DBA_MINING_MODELS" not found

ORA-16000: database or pluggable database open for read-only access

ORA-06508: PL/SQL: could not find program unit being called: "SYS.DBMS_DM_MODEL_EXP"

ORA-06512: at line 1

ORA-06512: at line 1

ORA-06512: at "SYS.DBMS_METADATA", line 10822

ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95