[Qgis-user] qgis-providers error

[Diogo Amore]

Dear admin,

I am currently experiencing an issue I have never had with QGIS in Ubuntu
18.04. I used it for months without any issues but suddenly, this week,
Qgis would not start and as I attempted to remove and reinstall it from
scratch I got the following error:

*Setting up qgis-providers (1:3.6.0+28bionic) ...*
*Cannot mix incompatible Qt library (version 0x50905) with this library
(version 0x50b01)*
*Aborted*
*dpkg: error processing package qgis-providers (--configure):*
* installed qgis-providers package post-installation script subprocess
returned error exit status 134*
*dpkg: dependency problems prevent configuration of qgis:*
* qgis depends on qgis-providers (= 1:3.6.0+28bionic); however:*
*  Package qgis-providers is not configured yet.*

*dpkg: error processing package qgis (--configure):*
* dependency problems - leaving unconfigured*
*dpkg: dependency problems prevent configuration of qgis-plugin-grass:*
* qgis-plugin-grass depends on qgis (= 1:3.6.0+28bionic); however:*
*  Package qgis is not configured yet.*

*dpkg: error processing package qgis-plugin-grass (--configure):*
* dependency problems - leaving unconfigured*
*No apport report written because the error message indicates it's a
follow-up error from a previous failure.*
*
                                  No apport report written because the
error message indicates it's a follow-up error from a previous failure.*
*                                       Errors were encountered while
processing:*
* qgis-providers*
* qgis*
* qgis-plugin-grass*
*E: Sub-process /usr/bin/dpkg returned an error code (1)*
*Setting up qgis-providers (1:3.6.0+28bionic) ...*
*Cannot mix incompatible Qt library (version 0x50905) with this library
(version 0x50b01)*
*Aborted*
*dpkg: error processing package qgis-providers (--configure):*
* installed qgis-providers package post-installation script subprocess
returned error exit status 134*
*dpkg: dependency problems prevent configuration of qgis:*
* qgis depends on qgis-providers (= 1:3.6.0+28bionic); however:*
*  Package qgis-providers is not configured yet.*

*dpkg: error processing package qgis (--configure):*
* dependency problems - leaving unconfigured*
*dpkg: dependency problems prevent configuration of qgis-plugin-grass:*
* qgis-plugin-grass depends on qgis (= 1:3.6.0+28bionic); however:*
*  Package qgis is not configured yet.*

*dpkg: error processing package qgis-plugin-grass (--configure):*
* dependency problems - leaving unconfigured*
*Errors were encountered while processing:*
* qgis-providers*
* qgis*
* qgis-plugin-grass*

I have never had any such issue due to Qt libraries. Also, I have not
updated nor changed anything from Qt versions installed. QGis simply
started showing this issue, and with the release of QGis 3.6 I assumed
there could be something to do with it, but I am not sure what exactly.

Any ideas on why this is so?

Thanks

Diogo
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