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warning: minimal.pdf (C API object handle 6): attempted access to unknown/uninitialized object handle
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  text: attempted access to unknown/uninitialized object handle
warning: minimal.pdf (C API object handle 9): attempted access to unknown/uninitialized object handle
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  text: attempted access to unknown/uninitialized object handle
warning: minimal.pdf (C API object handle 9): attempted access to unknown/uninitialized object handle
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  file: minimal.pdf
  pos : 0
  text: attempted access to unknown/uninitialized object handle
