How to configure my .travis.yml file so to let coveralls send report to my coveralls.io account and to change the "unknow" status shown by my coveralls bagde

[earthai-tech]

Hi everyone !
I still faced a trouble to configure coveralls. Coveralls successfully run in Travis CI and the report is visible BUT , after success ,You van see the following error :

0.03s$ coveralls
Traceback (most recent call last):
  File "/home/travis/miniconda/envs/test-env/bin/coveralls", line 5, in <module>
    from coveralls.cli import main
ModuleNotFoundError: No module named 'coveralls.cli'

and my coverage badge is still unknow and coverage could not send report to coveralls.io as you can see , no report is found.

I configure my .travis.yml as follow ;

dist: xenial
sudo: required

language: python
python:
  - "3.7"

before_script: null

before_install:
    - python -m pip install --upgrade pip

install:
     - wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh;
     - bash miniconda.sh -b -p $HOME/miniconda
     - export PATH="$HOME/miniconda/bin:$PATH"
    - hash -r
     - conda config --set always_yes yes --set changeps1 no
     - conda update -q conda
     - conda info -a
    - conda create -q -n test-env python=$TRAVIS_PYTHON_VERSION pytest pytest-cov pyyaml
    - source activate test-env
    - pip install -r requirements.txt     
    - pip install configparser
    - pip install coveralls

# command to run tests
script:
    - pytest -v --cov=pycsamt --cov-report= tests/  --ignore=setup.py
    
after_success:
  - coveralls
  

Could anyone help me to fix it ? thanks in advance !