Translating the description of the listings

Hey, everybody. There are some difficulties. Please help. In the new version of the script has the ability to translate the description of the listing in the background. When updating the translation of ads in the admin panel an error comes out....
Moreover, it affects only English language (I have another language set by default). The translation is great in all languages except English. Help, please.

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In the course of testing it turned out that this error occurs only when selecting the translator DeepL, everything works fine with Google. I hope the development team will check this information.