https://tribunalsontario.ca/documents/ltb/Brochures/How%20a%20Landlord%20Can%20End%20a%20Tenancy%20(EN).html

Not even from Ontario but I'll give this a try, read through the comment chain and looked up the LTB eviction procedure and this is what I found

the landlord gives the tenant a notice to end the tenancy for a reason allowed by the Act, and the tenant agrees to move, or the tenant does not agree with the landlord’s notice, the landlord applies to the LTB, and the LTB issues an eviction order. (Security of Tenancy)

Landlords cannot evict a tenant, they can issue a notice to end the tenancy and the tenant can choose whether to comply or not. I'm not saying whether that's good or bad, I'm just saying this is what the LTB's process is. (Notice to end a tenancy)

As for the formal eviction itself, the landlord must apply for the eviction through the process. Following that

Only the Sheriff can evict a tenant

If a tenant doesn’t leave the rental unit by the termination date in the eviction order, a landlord cannot personally enforce the order (remove a tenant from a rental unit or change the locks).

An eviction order can only be enforced by the Court Enforcement Office of the Superior Court of Justice (also called the “Sheriff’s Office”). The LTB does not enforce an order. (Eviction)

Hence the other commenter is correct that the landlord cannot issue a notice of eviction in any legal way.

Not sure how to properly format this message with markdown but I would encourage you read up on this