diff --git a/sdk/python/packages/flet-cli/src/flet_cli/commands/run.py b/sdk/python/packages/flet-cli/src/flet_cli/commands/run.py
index f2da83ab5..8ced5bdba 100644
--- a/sdk/python/packages/flet-cli/src/flet_cli/commands/run.py
+++ b/sdk/python/packages/flet-cli/src/flet_cli/commands/run.py
@@ -337,10 +337,13 @@ def on_any_event(self, event):
 
     def print_output(self, p):
         while True:
-            line = p.stdout.readline()
-            if not line:
+            raw = p.stdout.readline()
+            if not raw:
                 break
-            line = line.rstrip("\r\n")
+
+            line = raw.decode("utf-8", errors="replace") if isinstance(raw, bytes) else raw
+            line = line.rstrip("\r\n")            
+
             if line.startswith(self.page_url_prefix):
                 if not self.page_url:
                     self.page_url = line[len(self.page_url_prefix) + 1 :]