Informations About This British Coin And The Error On It. Tia

These would be manufacturing faults rather than errors. The streaky lines are from inconsistencies in the metal preparation before the striking, and the split has occurred on a lamination fault.
Milled coinage was still relatively new at this point in in history, so there tend to be lots of faults in the production - previously posted cracked and gouged dies are also part of this area. It is only really an error when something like a spelling mistake or mixed dies occur.