# Uvbuntu / VirtualBox / Messagebus Bug
**URL:** https://community.openconversational.ai/t/uvbuntu-virtualbox-messagebus-bug/10557
**Category:** This category is being retired - Support
**Created:** [April 15, 2021, 9:51am UTC](https://community.openconversational.ai/t/uvbuntu-virtualbox-messagebus-bug/10557 "2021-04-15T09:51:07Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@modernonline](https://community.openconversational.ai/u/modernonline)
#### Post date: [April 15, 2021, 9:51am UTC](https://community.openconversational.ai/t/uvbuntu-virtualbox-messagebus-bug/10557/1 "2021-04-15T09:51:07Z")
We’re using Mycroft for a workshop, and a few people are trying it out using VirtualBox emulators.
Everything works until one installs mycroft-messagebus-client. I think it has to do with how websockets are treated?
Mycroft hangs on “Establishing Messagebus Connection”. Even if later messagebus-client module is uninstalled, the error prevails.
Any leads?
[Update] it seems that a Python script can connect to the client fine (the object is initialized) so only on Mycroft side it seems to be hanging.
[Update2] same issue on Parallels Desktop
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### Author:  [@modernonline](https://community.openconversational.ai/u/modernonline)
#### Post date: [April 21, 2021, 3:12am UTC](https://community.openconversational.ai/t/uvbuntu-virtualbox-messagebus-bug/10557/2 "2021-04-21T03:12:45Z")
[update] in enclosure.log i found an ERROR stating “on\_message” takes 2 positional arguments but 3 were given,
and “on\_open” takes 1 but 2 were given.