Invalid regular expression code

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This is showing and “Uncaught Syntax error: invalid regular expression flags” even when I am typing all the things correct and I have copied and paste the solution still this is showing the same thing.

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<h1>Deep Thoughts with Master Camper Cat</h1>
<main>
<article>
  <h2>The Garfield Files: Lasagna as Training Fuel?</h2>
  <p>The internet is littered with varying opinions on nutritional paradigms, from catnip paleo to hairball cleanses. But let's turn our attention to an often overlooked fitness fuel, and examine the protein-carb-NOM trifecta that is lasagna...</p>
</article>

<img src="samuraiSwords.jpeg" alt="">

<article>
  <h2>Defeating your Foe: the Red Dot is Ours!</h2>
  <p>Felines the world over have been waging war on the most persistent of foes. This red nemesis combines both cunning stealth and lightning speed. But chin up, fellow fighters, our time for victory may soon be near...</p>
</article>

<img src="samuraiSwords.jpeg" alt="">

<article>
  <h2>Is Chuck Norris a Cat Person?</h2>
  <p>Chuck Norris is widely regarded as the premier martial artist on the planet, and it's a complete coincidence anyone who disagrees with this fact mysteriously disappears soon after. But the real question is, is he a cat person?...</p>
</article>
</main>

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Challenge: Wrap Content in the article Element

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