Unable to find module _aligners

I did conda create -n busco -c bioconda -c conda-forge busco=4.0.6 python=3.6 and conda activate busco but when I run busco I get: Unable to find module _aligners. Please make sure it is installed. See the user guide and the GitLab issue board (https://gitlab.com/ezlab/busco/issues) if you need further assistance.