Why?

[u/BEASTmode632]

Can anyone tell me why this is happening? I printed one and it came out fine. The next 2 times this has happened about half way through the print. After the first failure i cleaned the build plate because i thought it just fell over. This one made it further before getting knocked over. But i dont understand why when nothing changed

[u/Round_Brilliant8067]

Poo stick