Parts of the following sentence have been given as options. Select the option that contains an error.

Today she said to her friend, “You’re the sweetest person I have met ever”.

The correct option containing an error is: I have met ever”.

Explanation:
In English grammar, when using the present perfect tense with the word "ever" to describe an experience up to the present moment (especially following a superlative like "the sweetest person"), the adverb "ever" is typically placed before the main verb (the past participle), not at the very end of the clause.

Correct Position of "ever":
Instead of placing "ever" at the end of the sentence, it should be placed right after the auxiliary verb "have" and before the past participle "met":

"You’re the sweetest person I have ever met."

Therefore, the segment "I have met ever”." contains an adjectival/adverbial placement error, making it the correct choice.