It looks like at some point that the qiime2-2020.6 environment was added to the beginning of your $PATH variable (as indicated by /home-1/[email protected]/miniconda3/envs/qiime2-2020.6/bin). This is supposed to happen when you activate the environment, but not when you're in your base conda environment.
Depending on your system you'll have a configuration file that has commands that are run every time you login (one of these most likely: .bashrc, .profile, or .bash_profile). If you check in these files was a line added so that the PATH variable is altered to point to the qiime2-2020.6 bin folder? If so then perhaps commenting out that line will solve these problems you're running into.