Mistake of Law: Can Student's Error be considered "Legal Error"?

Maine bhi socha tha I understand Contract, aur then the paper happened. Lekin, baad me pata laga ki Contract Law me "Mistake of Law" ka kya matlab hai. Toh, question yeh aata hai ki agar ek student Contract Law ka mistake karta hai, toh yeh "legal error" kehlaata hai? Maina to yaar, yeh socha hai ki agar ek student ek legal rule ka mistake karta hai toh yeh sirf ek "error of law" hai, bas.

Toh, meri jaan, aapka kya vichar hai? Kaun kahaan hai ki agar ek student ne ek contract sign kiya aur woh unki jaankari mein na tha, toh woh ek "legal error" hai?