Problems with WriteUFO in Mathematica 11.2 Ubuntu 16.04

Hi.

I have been experiencing a weird error concerning WriteUFO running. I have Mathematica 11.2 at Ubuntu 16.04 in a 64-bit machine.

After creating a very simple Lagrangian, I computed its corresponding Feynman rules and decay widths via FeynRules packages without any problem.

But as soon as I tried to create the UFO files I got this:

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Recursion depth of 4096 exceeded during evaluation of \ Message[Message::msgl,Hold[{$RecursionLimit::reclim2,$\ RecursionLimit::reclim2,$RecursionLimit::reclim2,General::stop}]]

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and also

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Hold[Rest::argx : Rest called with 2 arguments; 1 argument is expected.]
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What might be going wrong? Thanks for your soon help!