how to get a manifold mesh before compute_uvatlas?

[Savviitar]

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My Question

RuntimeError: [Open3D Error] (void open3d::t::geometry::kernel::uvunwrapping::{anonymous}::ComputeUVAtlasPartition(open3d::t::geometry::TriangleMesh, float, bool, open3d::t::geometry::kernel::uvunwrapping::{anonymous}::UVAtlasPartitionOutput&)) /root/Open3D/cpp/open3d/t/geometry/kernel/UVUnwrapping.cpp:124: UVAtlasPartition: Non-manifold mesh