Code changes triggers "no module update found"

[thorsmann]

Describe the bug
After updating from 0.7.x to 0.8.0 changes to the Python code leads to an error
[Reflex Frontend Exception]
Error: No module update found for route routes/._index
at http://localhost:3000/@id/__x00__virtual:react-router/hmr-runtime:476:15

• Python Version: 3.12
• Reflex Version: 0.8.0
• OS: OSX
• Browser (Optional): Chrome

Almost any change triggers this error. The application seems not to proper refresh once the error occurred. Killing and restarting the process fixes this issue but it is challenging to develop without auto reload.

[linear]

ENG-6513 Code changes triggers "no module update found"

[adhami3310]

does it happen on a blank app?

[adhami3310]

apparently stateful app hash isn't very consistent:

import reflex as rx


class State(rx.State):
    count: int = 0

    @rx.var
    def count_plus_one(self) -> int:
        """Return the count plus one."""
        return self.count + 1


def index():
    return rx.vstack(
        "hello worlds",
    )


def dynamic():
    return rx.vstack(
        "dynamic contet",
        rx.cond(
            State.count_plus_one,
            rx.el.div(),
            rx.el.div(),
        ),
    )


app = rx.App()
app.add_page(index)
app.add_page(dynamic, route="/dynamic")

[thorsmann]

After some minor modification it does pop up for the small example, too. Here my modified code

import reflex as rx


class State(rx.State):
    count: int = 0

    @rx.var
    def count_plus_one(self) -> int:
        """Return the count plus one."""
        return self.count + 1
    
    @rx.event
    def increment(self) -> int:
        self.count += 1    


def index():
    return rx.vstack(
        rx.text("Hey"),
        rx.text(f"Hello there! - {State.count}", font_size=".75em"),
        rx.button("Test", on_click=State.increment)
    )


def dynamic():
    return rx.vstack(
        "dynamic contet",
        rx.cond(
            State.count_plus_one,
            rx.el.div(),
            rx.el.div(),
        ),
    )


app = rx.App()
app.add_page(index)
app.add_page(dynamic, route="/dynamic")

[Reflex Frontend Exception]
 Error:  No module update found for route routes/._index
    at http://localhost:3000/@id/__x00__virtual:react-router/hmr-runtime:476:15

[Reflex Frontend Exception]
 Error:  No module update found for route routes/._index
    at http://localhost:3000/@id/__x00__virtual:react-router/hmr-runtime:476:15

[adhami3310]

@thorsmann nice find! should be fixed, it was a bit silly by me