fix leitura base64

utils.py

@@ -51,5 +51,5 @@ def clean_text(text: str) -> str:
     return text.encode("ascii", errors="ignore").decode()
 
 def get_base64(path: str) -> str:
-    with open(path, "rb") as f:
+    with open(path, "r") as f:
         return base64.b64encode(f.read()).decode("utf-8")