another attempt to fix bool error

app.py

@@ -42,7 +42,7 @@ model.eval()
 
 # === Role Agent with instruction/input/output format ===
 class RoleAgent:
-    def __init__(self, role_instruction, tokenizer=tokenizer, model=model):
+    def __init__(self, role_instruction, tokenizer, model):
         self.tokenizer = tokenizer
         self.model = model
         self.role_instruction = role_instruction