Notify msteams throws error (import requests, no named module) - but it´s allready installed

Installation done:

> OMD[azure]:~$ pip3 install requests
> Collecting requests
>   Downloading requests-2.27.1-py2.py3-none-any.whl (63 kB)
>      |████████████████████████████████| 63 kB 23 kB/s
> Collecting charset-normalizer~=2.0.0; python_version >= "3"
>   Downloading charset_normalizer-2.0.12-py3-none-any.whl (39 kB)
> Collecting urllib3<1.27,>=1.21.1
>   Downloading urllib3-1.26.9-py2.py3-none-any.whl (138 kB)
>      |████████████████████████████████| 138 kB 51.1 MB/s
> Collecting certifi>=2017.4.17
>   Downloading certifi-2021.10.8-py2.py3-none-any.whl (149 kB)
>      |████████████████████████████████| 149 kB 49.3 MB/s
> Collecting idna<4,>=2.5; python_version >= "3"
>   Downloading idna-3.3-py3-none-any.whl (61 kB)
>      |████████████████████████████████| 61 kB 8.7 MB/s
> Installing collected packages: charset-normalizer, urllib3, certifi, idna, requests
> Successfully installed certifi-2021.10.8 charset-normalizer-2.0.12 idna-3.3 requests-2.27.1 urllib3-1.26.9

fired up new alert →

same result:
Traceback (most recent call last): – File “/omd/sites/azure/local/share/check_mk/notifications/msteams”, line 6, in – import requests – ImportError: No module named requests