I have get some error in random events during reco macro. I am not able to understand what's that

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[INFO ] Time to execute 1 event: 2.447343 s

[INFO ] Used resident memory: 298 MB

[INFO ] Used virtual memory: 861 MB

Error in <TDecompChol::Decompose()>: matrix not positive definite

Error in <TDecompChol::Solve()>: Decomposition failed

Error in <TLinearFitter::Eval>: Matrix inversion failed

Warning in <Minimize>: TLinearFitter failed in finding the solution

Error in <TDecompChol::Decompose()>: matrix not positive definite

Error in <TDecompChol::Solve()>: Decomposition failed

Error in <TLinearFitter::Eval>: Matrix inversion failed

Warning in <Minimize>: TLinearFitter failed in finding the solution

Error in <TDecompChol::Decompose()>: matrix not positive definite

Error in <TDecompChol::Solve()>: Decomposition failed

Error in <TLinearFitter::Eval>: Matrix inversion failed

Warning in <Minimize>: TLinearFitter failed in finding the solution

Error in <TDecompChol::Decompose()>: matrix not positive definite

Error in <TDecompChol::Solve()>: Decomposition failed

Error in <TLinearFitter::Eval>: Matrix inversion failed

Warning in <Minimize>: TLinearFitter failed in finding the solution

Error in <TDecompChol::Decompose()>: matrix not positive definite

Error in <TDecompChol::Solve()>: Decomposition failed

Error in <TLinearFitter::Eval>: Matrix inversion failed

Warning in <Minimize>: TLinearFitter failed in finding the solution

Error in <TDecompChol::Decompose()>: matrix not positive definite

Error in <TDecompChol::Solve()>: Decomposition failed

Error in <TLinearFitter::Eval>: Matrix inversion failed

Warning in <Minimize>: TLinearFitter failed in finding the solution

Error in <TDecompChol::Decompose()>: matrix not positive definite

Error in <TDecompChol::Solve()>: Decomposition failed

Error in <TLinearFitter::Eval>: Matrix inversion failed

Warning in <Minimize>: TLinearFitter failed in finding the solution

Error in <TDecompChol::Decompose()>: matrix not positive definite

Error in <TDecompChol::Solve()>: Decomposition failed

Error in <TLinearFitter::Eval>: Matrix inversion failed

Warning in <Minimize>: TLinearFitter failed in finding the solution

Error in <TDecompChol::Decompose()>: matrix not positive definite

Error in <TDecompChol::Solve()>: Decomposition failed

Error in <TLinearFitter::Eval>: Matrix inversion failed

Warning in <Minimize>: TLinearFitter failed in finding the solution

Found Tracks: 4 in event no. 31

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[INFO ] Time to execute 1 event: 2.563399 s

[INFO ] Used resident memory: 298 MB

[INFO ] Used virtual memory: 861 MB

Found Tracks: 5 in event no. 32

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