[error] Promised response from onMessage listener went out of scope

This happens in the update 5.0.3. (5.0.1 it’s OK same macro)
I using firefox 67.0.1

The error appears just after any “pause” command end.


I’m also having the same problem. Started happening after the most recent update.

1 Like

Hi. I am facing same issue.
Using Firefox latest (67.0.1) with Kantu for Firefox 5.0.3. (Windows 10 x64 v1903)
XModules Version = ui.vision-xmodules-setup-v201905.exe

It stops randomly but only at the following command :

selctWindows | tab=open | https://www.travellanda.com/

[error] Promised response from onMessage listener went out of scope

After a Google of the error, you will notice that several FF add-ons encountered this issue in the past.
I don’t know where to look in Firefox to give more details. [something about Web Developer toolbar or something]. I’ll try to provide as much info you need.

Many thanks.

1 Like

Here is Web Developer > Console errors:


I see that this code it’s the same: “type”:“CS_ASK_BG_2876” while “uid”:“ipcp_1560240773942_535” is changing.

Another FF WebDev Console Errors Output:


I don’t know if it’s related but sometimes this error appears : e is undefined

Executing: | type | id=bookid | ${BookingID} |

Executing: | click | xpath=//*[@id=“form-search-booking”]/div[5]/div/input | |

Executing: | store | 4 | !TIMEOUT_WAIT |

Executing: | assertText | xpath=//*[@id=“column-single”]/div[2]/div | Notice : No bookings to display. |

e is undefined

Just looked in Console while error e is undefined:


Any idea about error?

I can use old version?

You are free to use any version you want but keep in mind about differences between versions.
Like the new If_V2 or GotoIf_V2, etc.
Download Older UI.Vision Kantu versions.
Read Whats New to see possible Bugs and differences.
Example : the command executeScript_Sandbox introduced in version 5.
You can use v4.x but when you transition to v5.x you need to adjust your script files with new commands.
When you switch from v4.x to v5.x be prepared to encounter this:


1 Like


I trying in chrome, and for the moment no error. I will continue to do tests.


i prefer the old one

1 Like

Hi for me it’s the same. The error occours randomly during the execution of PAUSE command. Macro doesn’t stop working but jump loop and the counter of second run randomly.

Now i’m using the older version 5.0.1 and it doesn’t matter.

1 Like

It seems that the new version (5.0.5) fails less times, but still fails too much

Sorry for interruption guys. But it’s beautiful. :sweat_smile:
The list of people in discussion…
Sorry for spoiling. Could not resist. :blush:

1 Like

And my nickname is Ako :))))

Is anyone still seeing the issue in V5.0.5? If so, please let us know. We can not recreate it here.

Yes, same problem in firefox 67.0.3.
I think it fails less times than before, but I’m not sure. In any case it still fails a lot, in the first seconds.

Chrome it’s OK for me.

1 Like

Still receiving error on the latest versions of Firefox and the extension as of 6/25/2019

1 Like

Same error in V5.0.3 and V5.0.5.

V5.0.1 is ok.

Using Firefox 60.7.2

1 Like

Still having this issue! Has made Kantu almost useless to me now. :frowning: Is tech support actively working on this?

Any suggestions for different applications similar to Kantu? Probably going to have to switch :frowning:

Of course we are working on this, but it takes some time to recreate and then fix the issue. That said, we hope to have a solution next week.

Workaround: Please downgrade to Kantu V5.0.1. You find all older versions in the archive.

1 Like

This issue should be fixed with V5.0.8 - but if not, please let us know.

1 Like