[Math Processing Error]

I have this error: [Math Processing Error] for just one page of my blog. here is the page:
ecuaciones diferenciales en 4 pasos, click here

I’m pretty sure that the problem is related with the following issue: https://github.com/mathjax/MathJax/issues/413

but i don’t know how to fix it.

Can you help me please?

Thank you in advance

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