Uncaught ReferenceError: ret is not defined

[vgraphr]

when use froala in production mode get this error : Uncaught ReferenceError: ret is not defined

Uncaught ReferenceError: ret is not defined
    at t (app.js?id=fa0c1b6cfb8165f2d7cd:1)
    at i (app.js?id=fa0c1b6cfb8165f2d7cd:1)
    at v.Bootstrap.s (app.js?id=fa0c1b6cfb8165f2d7cd:1)
    at Object.g [as trigger] (app.js?id=fa0c1b6cfb8165f2d7cd:1)
    at Object._init (app.js?id=fa0c1b6cfb8165f2d7cd:1)
    at v.Bootstrap.load (app.js?id=fa0c1b6cfb8165f2d7cd:1)
    at v.Bootstrap.b (app.js?id=fa0c1b6cfb8165f2d7cd:1)
t @ app.js?id=fa0c1b6cfb8165f2d7cd:1
i @ app.js?id=fa0c1b6cfb8165f2d7cd:1
s @ app.js?id=fa0c1b6cfb8165f2d7cd:1
g @ app.js?id=fa0c1b6cfb8165f2d7cd:1
_init @ app.js?id=fa0c1b6cfb8165f2d7cd:1
v.Bootstrap.load @ app.js?id=fa0c1b6cfb8165f2d7cd:1
b @ app.js?id=fa0c1b6cfb8165f2d7cd:1
setTimeout (async)
(anonymous) @ app.js?id=fa0c1b6cfb8165f2d7cd:1
(anonymous) @ app.js?id=fa0c1b6cfb8165f2d7cd:1
v.Bootstrap._init @ app.js?id=fa0c1b6cfb8165f2d7cd:1
v.Bootstrap @ app.js?id=fa0c1b6cfb8165f2d7cd:1
e @ app.js?id=fa0c1b6cfb8165f2d7cd:1
createEditor @ app.js?id=fa0c1b6cfb8165f2d7cd:1
mounted @ app.js?id=fa0c1b6cfb8165f2d7cd:1
Ut @ app.js?id=fa0c1b6cfb8165f2d7cd:1
Je @ app.js?id=fa0c1b6cfb8165f2d7cd:1
insert @ app.js?id=fa0c1b6cfb8165f2d7cd:1
Ut @ app.js?id=fa0c1b6cfb8165f2d7cd:1
n @ app.js?id=fa0c1b6cfb8165f2d7cd:1
M @ app.js?id=fa0c1b6cfb8165f2d7cd:1
(anonymous) @ app.js?id=fa0c1b6cfb8165f2d7cd:1
INkZ.t._update @ app.js?id=fa0c1b6cfb8165f2d7cd:1
r @ app.js?id=fa0c1b6cfb8165f2d7cd:1
INkZ.hn.get @ app.js?id=fa0c1b6cfb8165f2d7cd:1
INkZ.hn.run @ app.js?id=fa0c1b6cfb8165f2d7cd:1
dn @ app.js?id=fa0c1b6cfb8165f2d7cd:1
(anonymous) @ app.js?id=fa0c1b6cfb8165f2d7cd:1
Gt @ app.js?id=fa0c1b6cfb8165f2d7cd:1
Promise.then (async)
Yt @ app.js?id=fa0c1b6cfb8165f2d7cd:1
ee @ app.js?id=fa0c1b6cfb8165f2d7cd:1
(anonymous) @ app.js?id=fa0c1b6cfb8165f2d7cd:1
INkZ.hn.update @ app.js?id=fa0c1b6cfb8165f2d7cd:1
INkZ.ut.notify @ app.js?id=fa0c1b6cfb8165f2d7cd:1
set @ app.js?id=fa0c1b6cfb8165f2d7cd:1
fn.set @ app.js?id=fa0c1b6cfb8165f2d7cd:1
(anonymous) @ app.js?id=fa0c1b6cfb8165f2d7cd:1
activeChild @ app.js?id=fa0c1b6cfb8165f2d7cd:1
click @ app.js?id=fa0c1b6cfb8165f2d7cd:1
Ut @ app.js?id=fa0c1b6cfb8165f2d7cd:1
n @ app.js?id=fa0c1b6cfb8165f2d7cd:1
Kr.o._wrapper @ app.js?id=fa0c1b6cfb8165f2d7cd:1

what's the problem ?