2805535 - SYS.BLCKFREESPACE (TYPE) invalid during Oracle upgrade

During Oracle 18c upgrade the @pre_upgrade_checks.sql show the following warning, Invalid object:

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List of invalid objects:

SYS.BLCKFREESPACE (TYPE)

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Generic Pre-Upgrade Warnings

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WARNING: ----> INVALID_SYS_OBJECTS

               There are invalid objects in the SYS schema.

               Invalid SYS objects can cause the database upgrade to fail.

               Check why these objects are invalid before upgrading

               the database.

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Oracle Database

BLCKFREESPACE, SYS, Invalid, 18c, Upgrade, Tuning, Script, Standard, Object , KBA , BC-DB-ORA , Oracle , Problem