From 8f578d9e60b73fb0667ef3305c1d9da073202573 Mon Sep 17 00:00:00 2001
From: Benedikt Bartscher <bb@senbax.de>
Date: Sun, 10 Nov 2024 23:20:04 +0100
Subject: [PATCH] subtract 1 arg if the method is a bound method

---
 reflex/event.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/reflex/event.py b/reflex/event.py
index a64d4d6c1..3a114cd23 100644
--- a/reflex/event.py
+++ b/reflex/event.py
@@ -1353,6 +1353,10 @@ def check_fn_match_arg_spec(
 
     number_of_event_args = len(parsed_event_args)
 
+    # Subtract 1 if the method is a bound method
+    if inspect.ismethod(user_func):
+        number_of_user_args -= 1
+
     if number_of_user_args - number_of_user_default_args > number_of_event_args:
         raise EventFnArgMismatch(
             f"Event {key} only provides {number_of_event_args} arguments, but "