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Published
20 hours ago •
holoviz
holoviz
panel convert: Error raised while processing Document events: Error: reference ... isn't known
I'm on the main branch of Panel (post 1.3.1) using Bokeh 3.3.0. I'm trying to create a PanelLite playground. I'm having a hard time getting an Panel app with a template to work. I'm trying to find the cause which is hard.
One problem I see is
Reproduce
app.py
import panel as pn
pn.extension()
button = pn.widgets.Button(name="Click Me")
component = pn.Row(button, pn.bind(lambda c: c, button.param.clicks))
pn.template.FastListTemplate(title="Panel Pyodide", main=[component]).servable()
panel convert app.py --skip-embed
app.html
<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="utf-8">
<title>Panel Pyodide</title>
<link rel="apple-touch-icon" sizes="180x180" href="https://cdn.holoviz.org/panel/1.3.1/dist/images/apple-touch-icon.png">
<link rel="icon" href="https://cdn.holoviz.org/panel/1.3.1/dist/images/favicon.ico" type=""><meta name="name" content="Panel Pyodide"> <style>
html, body {
display: flow-root;
box-sizing: border-box;
height: 100%;
margin: 0;
padding: 0;
}
</style>
<style type="text/css">
:host(.pn-loading),
.pn-loading {
overflow: hidden;
}
:host(.pn-loading):before,
.pn-loading:before {
position: absolute;
height: 100%;
width: 100%;
content: '';
z-index: 1000;
background-color: rgb(255, 255, 255, 0.5);
border-color: lightgray;
background-repeat: no-repeat;
background-position: center;
background-size: auto 50%;
border-width: 1px;
cursor: progress;
}
:host(.pn-loading) .pn-loading-msg,
.pn-loading .pn-loading-msg {
position: absolute;
top: 72%;
font-size: 2em;
color: black;
width: 100%;
text-align: center;
}
:host(.pn-loading.pn-arc):before, .pn-loading.pn-arc:before {
background-image: url("data:image/svg+xml;base64,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");
background-size: auto calc(min(50%, 400px));
}
</style><script src="https://cdn.jsdelivr.net/pyodide/v0.24.1/full/pyodide.js"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-3.3.0.min.js"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-gl-3.3.0.min.js"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-widgets-3.3.0.min.js"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-tables-3.3.0.min.js"></script>
<script type="text/javascript" src="https://cdn.holoviz.org/panel/1.3.1/dist/panel.min.js"></script>
<script type="text/javascript">
Bokeh.set_log_level("info");
</script><!-- Template CSS -->
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans">
<link rel="stylesheet" href="https://cdn.holoviz.org/panel/1.3.1/dist/bundled/theme/default.css">
<link rel="stylesheet" href="https://cdn.holoviz.org/panel/1.3.1/dist/bundled/fastbasetemplate/fast.css">
<link rel="stylesheet" href="https://cdn.holoviz.org/panel/1.3.1/dist/bundled/fastlisttemplate/fast_list_template.css">
<style type="text/css">
:host(.pn-loading.pn-arc):before, .pn-loading.pn-arc:before {
background-image: url("data:image/svg+xml;base64,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");
background-size: auto calc(min(50%, 400px));
}
</style>
<link rel="stylesheet" type="text/css" href="//fonts.googleapis.com/css?family=Open+Sans" />
<style>
:root {
--background-color: #ffffff;
--body-font: Open Sans, sans-serif;
--corner-radius: 3;
--header-background: #0072B5;
--header-color: #ffffff;
--sidebar-width: 330px;
}
body {
color: #2B2B2B;
background-color: var(--background-color);
font-family: var(--body-font);
}
#header a {
color: currentColor;
}
#header-design-provider {
--neutral-fill-hover: var(--header-background);
--neutral-fill-rest: var(--header-background);
--neutral-foreground-rest: var(--header-color);
background: var(--header-background);
color: var(--header-color);
}
#sidebar {
min-width: var(--sidebar-width);
max-width: var(--sidebar-width);
}
</style>
<!-- Template JS -->
<script src="https://cdn.holoviz.org/panel/1.3.1/dist/bundled/fastbasetemplate/fast_template.js"></script>
<script src="https://cdn.holoviz.org/panel/1.3.1/dist/bundled/@microsoft/[email protected]/dist/fast-components.js" type="module"></script>
<script src="https://cdn.holoviz.org/panel/1.3.1/dist/bundled/fast/js/fast_design.js" type="module"></script>
<!-- Fast Script -->
<script type="text/javascript">
document.addEventListener('DOMContentLoaded', (event) => {
const header_design = new window.fastDesignProvider("#header-design-provider");
const body_design = window.bodyDesign = new window.fastDesignProvider("#body-design-provider");
body_design.setLuminance(1.0);
body_design.setAccentColor("#0072B5")
body_design.setNeutralColor("#000000");
header_design.setLuminance(1.0);
header_design.setAccentColor("#ffffff");
header_design.setNeutralColor("#ffffff");
});
</script>
</head>
<body class="pn-loading pn-arc">
<fast-design-system-provider id="body-design-provider" use-defaults>
<div id="container">
<fast-design-system-provider id="header-design-provider">
<nav id="header" class="shadow" >
<div class="app-header">
<a class="title" href="" >Panel Pyodide</a>
</div>
<div id="header-items">
</div>
<div class="pn-toggle-theme">
<fast-switch id="theme-switch" style="float: right;" onChange="toggleLightDarkTheme('default')" checked>
<span slot="checked-message">
<svg class="theme-toggle-icon" fill="currentColor" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 25 25"><path d="M0 0h24v24H0z" fill="none"/><path d="M6.76 4.84l-1.8-1.79-1.41 1.41 1.79 1.79 1.42-1.41zM4 10.5H1v2h3v-2zm9-9.95h-2V3.5h2V.55zm7.45 3.91l-1.41-1.41-1.79 1.79 1.41 1.41 1.79-1.79zm-3.21 13.7l1.79 1.8 1.41-1.41-1.8-1.79-1.4 1.4zM20 10.5v2h3v-2h-3zm-8-5c-3.31 0-6 2.69-6 6s2.69 6 6 6 6-2.69 6-6-2.69-6-6-6zm-1 16.95h2V19.5h-2v2.95zm-7.45-3.91l1.41 1.41 1.79-1.8-1.41-1.41-1.79 1.8z"/></svg>
</span>
<span slot="unchecked-message">
<svg class="theme-toggle-icon" fill="currentColor" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 25 25"><path d="M0 0h24v24H0z" fill="none"/><path d="M10 2c-1.82 0-3.53.5-5 1.35C7.99 5.08 10 8.3 10 12s-2.01 6.92-5 8.65C6.47 21.5 8.18 22 10 22c5.52 0 10-4.48 10-10S15.52 2 10 2z"/></svg>
</span>
</fast-switch>
<fast-tooltip anchor="theme-switch" position="bottom">
Toggle the Theme
</fast-tooltip>
</div>
<div class="pn-busy-container" id="busy-container">
<div id="f4f3e401-1bf8-48fb-b201-dc50a5f1e9db" data-root-id="p1016" style="display: contents;"></div>
</div>
<fast-tooltip anchor="busy-container" position="left">
Busy Indicator
</fast-tooltip>
</nav>
</fast-design-system-provider>
<div class="row" id="content">
<div class="main" id="main">
<div class="card-margin None">
<fast-card class="pn-wrapper">
<span class="fullscreen-button" onclick="toggleFullScreen(this)">
<svg xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 18 18">
<path d="M4.5 11H3v4h4v-1.5H4.5V11zM3 7h1.5V4.5H7V3H3v4zm10.5 6.5H11V15h4v-4h-1.5v2.5zM11 3v1.5h2.5V7H15V3h-4z"/>
</svg>
</span>
<div id="514ec927-ac5f-4b9a-882a-500946577119" data-root-id="p1017" style="display: contents;"></div>
</fast-card>
</div>
</div>
<fast-dialog id="pn-Modal" hidden>
<fast-button class="pn-modal-close" id="pn-closeModal">×</fast-button>
<div>
</div>
</fast-dialog>
</div>
</div>
</fast-design-system-provider>
<script type="text/javascript">
</script>
<script type="text/javascript">
function openNav() {
document.getElementById("sidebar").classList.remove("hidden");
document.getElementById("sidebar-button").onclick = closeNav;
}
function closeNav() {
document.getElementById("sidebar").classList.add("hidden");
document.getElementById("sidebar-button").onclick = openNav;
}
var modal = document.getElementById("pn-Modal");
var span = document.getElementById("pn-closeModal");
span.onclick = function() {
modal.style.display = "none";
}
window.onclick = function(event) {
if (event.target == modal) {
modal.style.display = "none";
}
}
</script>
<div id="d153cf48-42c8-4593-af30-46f015eaa98b" data-root-id="p1009" style="display: contents;"></div>
<div id="9c53e5c6-d191-4fa3-a050-860fc2c17531" data-root-id="p1012" style="display: contents;"></div>
<div id="391e2b57-3c83-4c07-a76d-aa94351bf9de" data-root-id="p1002" style="display: contents;"></div>
<div id="80f7218f-2939-4226-af56-9e086ee34819" data-root-id="p1013" style="display: contents;"></div>
<script type="text/javascript">
async function main() {
let pyodide = await loadPyodide();
await pyodide.loadPackage("micropip");
await pyodide.runPythonAsync(`
import micropip
await micropip.install(['https://cdn.holoviz.org/panel/wheels/bokeh-3.3.0-py3-none-any.whl', 'https://cdn.holoviz.org/panel/1.3.1/dist/wheels/panel-1.3.1-py3-none-any.whl', 'pyodide-http==0.2.1']);
`);
code = `
import asyncio
from panel.io.pyodide import init_doc, write_doc
init_doc()
import panel as pn
pn.extension()
button = pn.widgets.Button(name="Click Me")
component = pn.Row(button, pn.bind(lambda c: c, button.param.clicks))
pn.template.FastListTemplate(title="Panel Pyodide", main=[component]).servable()
await write_doc()`
await pyodide.runPythonAsync(code);
}
main();
</script>
</body>
</html>
python -m http.server
Open localhost:8000/app.html.
Error raised while processing Document events: Error: reference aa08158b-2f3a-4d99-9ddc-f65efce0de6d isn't known
This problem also makes conversion to Pyscript unusable at the moment because the error is printed in the page.
import panel as pn
pn.extension()
pn.template.FastListTemplate(
title="hello", main=[pn.panel("Hello")]
).servable()
panel convert script.py --to pyscript
panel==1.3.6
I can still reproduce the problem in Panel 1.4.0 with panel convert app.py --to pyodide-worker --out pyodide.