It is a grammatical error involving incorrect verb form usage.
People often mistake "began" as the past participle form of the verb "begin", while it is actually the simple past tense form.
The correct form is "having begun" because "begun" is the past participle of "begin".
People often make this error because "into" is a preposition ... Learn more →
People often make this error due to phonetic spelling, as ... Learn more →
The phrase "be ware" is an incorrect attempt to spell ... Learn more →
People often make this error because in some languages, the ... Learn more →