fix: submitwork coredumped with an empty block_ptr
fix: submitwork coredumped with an empty block_ptr

mvs-org/metaverse,the-metaverse/metaverse,mvs-live/metaverse,mvs-live/metaverse,mvs-org/metaverse,mvs-org/metaverse,the-metaverse/metaverse,mvs-org/metaverse,mvs-org/metaverse,mvs-org/metaverse,the-metaverse/metaverse