Description of problem:
when I start to launch qgis on mageia 7 beta 2, I have the following error message :

Couldn't load plugin 'MetaSearch' due to an error when calling its classFactory() method 

ModuleNotFoundError: No module named 'owslib' 
Traceback (most recent call last):
  File "/usr/lib64/python3.7/site-packages/qgis/utils.py", line 335, in startPlugin
    plugins[packageName] = package.classFactory(iface)
  File "/usr/share/qgis/python/plugins/MetaSearch/__init__.py", line 29, in classFactory
    from MetaSearch.plugin import MetaSearchPlugin
  File "/usr/lib64/python3.7/site-packages/qgis/utils.py", line 672, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "/usr/share/qgis/python/plugins/MetaSearch/plugin.py", line 34, in 
    from MetaSearch.dialogs.maindialog import MetaSearchDialog
  File "/usr/lib64/python3.7/site-packages/qgis/utils.py", line 672, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "/usr/share/qgis/python/plugins/MetaSearch/dialogs/maindialog.py", line 50, in 
    from owslib.csw import CatalogueServiceWeb # spellok
  File "/usr/lib64/python3.7/site-packages/qgis/utils.py", line 672, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
ModuleNotFoundError: No module named 'owslib'

it seems to be a missing python module : owslib


Version-Release number of selected component (if applicable):
=> rpm -qa | grep qgis | sort
python3-qgis-3.4.6-1.mga7
qgis-3.4.6-1.mga7


How reproducible:


Steps to Reproduce:
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