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Refused to set the document's base URI to '' because it violates the following Content Security Policy directive: "base-uri 'self' #4438

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opened 2026-02-05 08:53:29 +03:00 by OVERLORD · 3 comments
OVERLORD commented 2026-02-05 08:53:29 +03:00
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Originally created by @J-Wick4 on GitHub (Jan 30, 2024).

Describe the Bug

I'm getting this error every time the editor is open to create or edit a page.

app.js?version=v23.12.2:43 Refused to set the document's base URI to '' because it violates the following Content Security Policy directive: "base-uri 'self'".

init_instance_callback @ app.js?version=v23.12.2:43
(anonymous) @ tinymce.min.js?version=v23.12.2:4
pO @ tinymce.min.js?version=v23.12.2:4
(anonymous) @ tinymce.min.js?version=v23.12.2:4
Promise.then (async)
(anonymous) @ tinymce.min.js?version=v23.12.2:4
fold @ tinymce.min.js?version=v23.12.2:4
hO @ tinymce.min.js?version=v23.12.2:4
n @ tinymce.min.js?version=v23.12.2:4
(anonymous) @ tinymce.min.js?version=v23.12.2:4
(anonymous) @ tinymce.min.js?version=v23.12.2:4
load (async)
(anonymous) @ tinymce.min.js?version=v23.12.2:4
_o @ tinymce.min.js?version=v23.12.2:4
(anonymous) @ tinymce.min.js?version=v23.12.2:4
(anonymous) @ tinymce.min.js?version=v23.12.2:4
xO @ tinymce.min.js?version=v23.12.2:4
await in xO (async)
o @ tinymce.min.js?version=v23.12.2:4
Promise.then (async)
_O @ tinymce.min.js?version=v23.12.2:4
(anonymous) @ tinymce.min.js?version=v23.12.2:4
render @ tinymce.min.js?version=v23.12.2:4
(anonymous) @ tinymce.min.js?version=v23.12.2:4
(anonymous) @ tinymce.min.js?version=v23.12.2:4
Re @ tinymce.min.js?version=v23.12.2:4
s @ tinymce.min.js?version=v23.12.2:4
executeHandlers @ tinymce.min.js?version=v23.12.2:4
i @ tinymce.min.js?version=v23.12.2:4
s @ tinymce.min.js?version=v23.12.2:4

Steps to Reproduce

Open any new page to start editing.

Expected Behaviour

Not to see the error in the console.

Screenshots or Additional Context

No response

Browser Details

Brave Browser

Exact BookStack Version

v23.12.2

Originally created by @J-Wick4 on GitHub (Jan 30, 2024). ### Describe the Bug I'm getting this error every time the editor is open to create or edit a page. ``` app.js?version=v23.12.2:43 Refused to set the document's base URI to '' because it violates the following Content Security Policy directive: "base-uri 'self'". init_instance_callback @ app.js?version=v23.12.2:43 (anonymous) @ tinymce.min.js?version=v23.12.2:4 pO @ tinymce.min.js?version=v23.12.2:4 (anonymous) @ tinymce.min.js?version=v23.12.2:4 Promise.then (async) (anonymous) @ tinymce.min.js?version=v23.12.2:4 fold @ tinymce.min.js?version=v23.12.2:4 hO @ tinymce.min.js?version=v23.12.2:4 n @ tinymce.min.js?version=v23.12.2:4 (anonymous) @ tinymce.min.js?version=v23.12.2:4 (anonymous) @ tinymce.min.js?version=v23.12.2:4 load (async) (anonymous) @ tinymce.min.js?version=v23.12.2:4 _o @ tinymce.min.js?version=v23.12.2:4 (anonymous) @ tinymce.min.js?version=v23.12.2:4 (anonymous) @ tinymce.min.js?version=v23.12.2:4 xO @ tinymce.min.js?version=v23.12.2:4 await in xO (async) o @ tinymce.min.js?version=v23.12.2:4 Promise.then (async) _O @ tinymce.min.js?version=v23.12.2:4 (anonymous) @ tinymce.min.js?version=v23.12.2:4 render @ tinymce.min.js?version=v23.12.2:4 (anonymous) @ tinymce.min.js?version=v23.12.2:4 (anonymous) @ tinymce.min.js?version=v23.12.2:4 Re @ tinymce.min.js?version=v23.12.2:4 s @ tinymce.min.js?version=v23.12.2:4 executeHandlers @ tinymce.min.js?version=v23.12.2:4 i @ tinymce.min.js?version=v23.12.2:4 s @ tinymce.min.js?version=v23.12.2:4 ``` ### Steps to Reproduce Open any new page to start editing. ### Expected Behaviour Not to see the error in the console. ### Screenshots or Additional Context _No response_ ### Browser Details Brave Browser ### Exact BookStack Version v23.12.2
OVERLORD added the 🐛 Bug📝 WYSIWYG Editor💻 Front-End labels 2026-02-05 08:53:29 +03:00
OVERLORD commented 2026-02-05 08:53:36 +03:00
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@ssddanbrown commented on GitHub (Jan 30, 2024):

Thanks for raising @J-Wick4.
I've addressed this in 24e6dc4b37, to be part of the next feature release.

@ssddanbrown commented on GitHub (Jan 30, 2024): Thanks for raising @J-Wick4. I've addressed this in 24e6dc4b37f857ffe6f8eab85ca177ed290bb38a, to be part of the next feature release.
OVERLORD commented 2026-02-05 08:53:41 +03:00
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@surya-santos commented on GitHub (May 10, 2024):

Hi there,

I'm also having the same issue but I'm on:

BookStack v23.10.4

Additionally, it won't save anything and the page won't publish, it gets stuck in a draft.

POST https://mysite.xyz/books/smybook/draft/188 500 (Internal Server Error)
app.js?version=v23.10.4:43 Refused to set the document's base URI to '' because it violates the following Content Security Policy directive: "base-uri 'self'".

init_instance_callback @ app.js?version=v23.10.4:43
(anonymous) @ tinymce.min.js?version=v23.10.4:4
dO @ tinymce.min.js?version=v23.10.4:4
(anonymous) @ tinymce.min.js?version=v23.10.4:4
Promise.then (async)
(anonymous) @ tinymce.min.js?version=v23.10.4:4
fold @ tinymce.min.js?version=v23.10.4:4
cO @ tinymce.min.js?version=v23.10.4:4
n @ tinymce.min.js?version=v23.10.4:4
(anonymous) @ tinymce.min.js?version=v23.10.4:4
(anonymous) @ tinymce.min.js?version=v23.10.4:4
load (async)
(anonymous) @ tinymce.min.js?version=v23.10.4:4
So @ tinymce.min.js?version=v23.10.4:4
(anonymous) @ tinymce.min.js?version=v23.10.4:4
(anonymous) @ tinymce.min.js?version=v23.10.4:4
hO @ tinymce.min.js?version=v23.10.4:4
await in hO (async)
o @ tinymce.min.js?version=v23.10.4:4
Promise.then (async)
CO @ tinymce.min.js?version=v23.10.4:4
(anonymous) @ tinymce.min.js?version=v23.10.4:4
render @ tinymce.min.js?version=v23.10.4:4
(anonymous) @ tinymce.min.js?version=v23.10.4:4
(anonymous) @ tinymce.min.js?version=v23.10.4:4
Re @ tinymce.min.js?version=v23.10.4:4
s @ tinymce.min.js?version=v23.10.4:4
executeHandlers @ tinymce.min.js?version=v23.10.4:4
i @ tinymce.min.js?version=v23.10.4:4
s @ tinymce.min.js?version=v23.10.4:4
9611.vendors.chunk.js:1 [DEFAULT]: WARN : Using DEFAULT root logger
value @ 9611.vendors.chunk.js:1
(anonymous) @ 9611.vendors.chunk.js:1
value @ 9611.vendors.chunk.js:1
value @ 9611.vendors.chunk.js:1
value @ 9611.vendors.chunk.js:1
value @ 9611.vendors.chunk.js:1
get @ 9611.vendors.chunk.js:1
value @ 9611.vendors.chunk.js:1
get _log @ 6215.vendors.chunk.js:1
26215 @ 6215.vendors.chunk.js:1
l @ Grammarly.js:2
64757 @ 7695.vendors.chunk.js:1
l @ Grammarly.js:2
93986 @ 6338.vendors.chunk.js:2
l @ Grammarly.js:2
91340 @ 6338.vendors.chunk.js:2
l @ Grammarly.js:2
76729 @ cheetah.common.chunk.js:1
l @ Grammarly.js:2
Promise.then (async)
init @ Grammarly.js:2
(anonymous) @ Grammarly.js:2
_initializeCheetahService @ Grammarly.js:2
(anonymous) @ Grammarly.js:2
t.__tryOrUnsub @ Grammarly.js:2
t.next @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
t.notifyNext @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
(anonymous) @ Grammarly.js:2
e._trySubscribe @ Grammarly.js:2
e.subscribe @ Grammarly.js:2
c @ Grammarly.js:2
t._innerSub @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
t.notifyNext @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
(anonymous) @ Grammarly.js:2
e._trySubscribe @ Grammarly.js:2
e.subscribe @ Grammarly.js:2
c @ Grammarly.js:2
t._innerSub @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
t.next @ Grammarly.js:2
t.next @ Grammarly.js:2
set @ Grammarly.js:2
(anonymous) @ Grammarly.js:2
t.__tryOrUnsub @ Grammarly.js:2
t.next @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
t.next @ Grammarly.js:2
(anonymous) @ Grammarly.js:2
t.__tryOrUnsub @ Grammarly.js:2
t.next @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
t.notifyNext @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
_processObservableMessage @ Grammarly.js:2
(anonymous) @ Grammarly.js:2
t.__tryOrUnsub @ Grammarly.js:2
t.next @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
t._next @ Grammarly.js:2
t.next @ Grammarly.js:2
t @ Grammarly.js:2
(anonymous) @ Grammarly.js:2
(anonymous) @ Grammarly.js:2
fire @ Grammarly.js:2
_onBgPortMessage @ Grammarly.js:2
Show 83 more frames
Show less
188:1 Uncaught (in promise) Error: A listener indicated an asynchronous response by returning true, but the message channel closed before a response was received

Is there a way I can fix it?

Thank you

@surya-santos commented on GitHub (May 10, 2024): Hi there, I'm also having the same issue but I'm on: BookStack v23.10.4 Additionally, it won't save anything and the page won't publish, it gets stuck in a draft. > POST https://mysite.xyz/books/smybook/draft/188 500 (Internal Server Error) > app.js?version=v23.10.4:43 Refused to set the document's base URI to '' because it violates the following Content Security Policy directive: "base-uri 'self'". > > init_instance_callback @ app.js?version=v23.10.4:43 > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > dO @ tinymce.min.js?version=v23.10.4:4 > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > Promise.then (async) > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > fold @ tinymce.min.js?version=v23.10.4:4 > cO @ tinymce.min.js?version=v23.10.4:4 > n @ tinymce.min.js?version=v23.10.4:4 > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > load (async) > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > So @ tinymce.min.js?version=v23.10.4:4 > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > hO @ tinymce.min.js?version=v23.10.4:4 > await in hO (async) > o @ tinymce.min.js?version=v23.10.4:4 > Promise.then (async) > CO @ tinymce.min.js?version=v23.10.4:4 > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > render @ tinymce.min.js?version=v23.10.4:4 > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > (anonymous) @ tinymce.min.js?version=v23.10.4:4 > Re @ tinymce.min.js?version=v23.10.4:4 > s @ tinymce.min.js?version=v23.10.4:4 > executeHandlers @ tinymce.min.js?version=v23.10.4:4 > i @ tinymce.min.js?version=v23.10.4:4 > s @ tinymce.min.js?version=v23.10.4:4 > 9611.vendors.chunk.js:1 [DEFAULT]: WARN : Using DEFAULT root logger > value @ 9611.vendors.chunk.js:1 > (anonymous) @ 9611.vendors.chunk.js:1 > value @ 9611.vendors.chunk.js:1 > value @ 9611.vendors.chunk.js:1 > value @ 9611.vendors.chunk.js:1 > value @ 9611.vendors.chunk.js:1 > get @ 9611.vendors.chunk.js:1 > value @ 9611.vendors.chunk.js:1 > get _log @ 6215.vendors.chunk.js:1 > 26215 @ 6215.vendors.chunk.js:1 > l @ Grammarly.js:2 > 64757 @ 7695.vendors.chunk.js:1 > l @ Grammarly.js:2 > 93986 @ 6338.vendors.chunk.js:2 > l @ Grammarly.js:2 > 91340 @ 6338.vendors.chunk.js:2 > l @ Grammarly.js:2 > 76729 @ cheetah.common.chunk.js:1 > l @ Grammarly.js:2 > Promise.then (async) > init @ Grammarly.js:2 > (anonymous) @ Grammarly.js:2 > _initializeCheetahService @ Grammarly.js:2 > (anonymous) @ Grammarly.js:2 > t.__tryOrUnsub @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t.notifyNext @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > (anonymous) @ Grammarly.js:2 > e._trySubscribe @ Grammarly.js:2 > e.subscribe @ Grammarly.js:2 > c @ Grammarly.js:2 > t._innerSub @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t.notifyNext @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > (anonymous) @ Grammarly.js:2 > e._trySubscribe @ Grammarly.js:2 > e.subscribe @ Grammarly.js:2 > c @ Grammarly.js:2 > t._innerSub @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > set @ Grammarly.js:2 > (anonymous) @ Grammarly.js:2 > t.__tryOrUnsub @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > (anonymous) @ Grammarly.js:2 > t.__tryOrUnsub @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t.notifyNext @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > _processObservableMessage @ Grammarly.js:2 > (anonymous) @ Grammarly.js:2 > t.__tryOrUnsub @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t._next @ Grammarly.js:2 > t.next @ Grammarly.js:2 > t @ Grammarly.js:2 > (anonymous) @ Grammarly.js:2 > (anonymous) @ Grammarly.js:2 > fire @ Grammarly.js:2 > _onBgPortMessage @ Grammarly.js:2 > Show 83 more frames > Show less > 188:1 Uncaught (in promise) Error: A listener indicated an asynchronous response by returning true, but the message channel closed before a response was received Is there a way I can fix it? Thank you
OVERLORD commented 2026-02-05 08:53:44 +03:00
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@ssddanbrown commented on GitHub (May 10, 2024):

@surya-santos open a new support thread, with detail from your error log as per our debug instructions:
https://www.bookstackapp.com/docs/admin/debugging/#error-log-file

It's also ideal to be using the latest version, to not get confused with old issues that have since been fixed.

@ssddanbrown commented on GitHub (May 10, 2024): @surya-santos open a new support thread, with detail from your error log as per our debug instructions: https://www.bookstackapp.com/docs/admin/debugging/#error-log-file It's also ideal to be using the latest version, to not get confused with old issues that have since been fixed.
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Reference: starred/BookStack#4438
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