C:\projects\arrow>mamba update -q -y -c conda-forge --all   || exit /B 
info     libmamba ****************** Backtrace Start ******************
debug    libmamba Loading configuration
trace    libmamba Compute configurable 'create_base'
trace    libmamba Compute configurable 'no_env'
trace    libmamba Compute configurable 'no_rc'
trace    libmamba Compute configurable 'rc_files'
trace    libmamba Compute configurable 'root_prefix'
trace    libmamba Get RC files configuration from locations up to HomeDir
trace    libmamba Configuration not found at 'C:\Users\appveyor\.mambarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.mamba\mambarc.d'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.mamba\mambarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.mamba\.mambarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\mamba\mambarc.d'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\mamba\mambarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\mamba\.mambarc'
trace    libmamba Configuration found at 'C:\Users\appveyor\.condarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.conda\condarc.d'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.conda\condarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.conda\.condarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\conda\condarc.d'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\conda\condarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\conda\.condarc'
trace    libmamba Configuration not found at 'C:\Miniconda38-x64\Library\.mambarc'
trace    libmamba Configuration not found at 'C:\Miniconda38-x64\Library\condarc.d'
trace    libmamba Configuration not found at 'C:\Miniconda38-x64\Library\condarc'
trace    libmamba Configuration not found at 'C:\Miniconda38-x64\Library\.condarc'
trace    libmamba Configuration not found at 'C:\ProgramData\conda\.mambarc'
trace    libmamba Configuration not found at 'C:\ProgramData\conda\condarc.d'
trace    libmamba Configuration not found at 'C:\ProgramData\conda\condarc'
trace    libmamba Configuration not found at 'C:\ProgramData\conda\.condarc'
trace    libmamba Update configurable 'no_env'
trace    libmamba Compute configurable 'envs_dirs'
trace    libmamba Compute configurable 'file_specs'
trace    libmamba Compute configurable 'spec_file_env_name'
trace    libmamba Compute configurable 'env_name'
trace    libmamba Compute configurable 'use_default_prefix_fallback'
trace    libmamba Compute configurable 'use_root_prefix_fallback'
trace    libmamba Compute configurable 'use_target_prefix_fallback'
trace    libmamba Compute configurable 'target_prefix'
trace    libmamba Get RC files configuration from locations up to TargetPrefix
trace    libmamba Configuration not found at 'C:\Users\appveyor\.mambarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.mamba\mambarc.d'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.mamba\mambarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.mamba\.mambarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\mamba\mambarc.d'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\mamba\mambarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\mamba\.mambarc'
trace    libmamba Configuration found at 'C:\Users\appveyor\.condarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.conda\condarc.d'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.conda\condarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\.conda\.condarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\conda\condarc.d'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\conda\condarc'
trace    libmamba Configuration not found at 'C:\Users\appveyor\AppData\Roaming\conda\.condarc'
trace    libmamba Configuration not found at 'C:\Miniconda38-x64\Library\.mambarc'
trace    libmamba Configuration not found at 'C:\Miniconda38-x64\Library\condarc.d'
trace    libmamba Configuration not found at 'C:\Miniconda38-x64\Library\condarc'
trace    libmamba Configuration not found at 'C:\Miniconda38-x64\Library\.condarc'
trace    libmamba Configuration not found at 'C:\ProgramData\conda\.mambarc'
trace    libmamba Configuration not found at 'C:\ProgramData\conda\condarc.d'
trace    libmamba Configuration not found at 'C:\ProgramData\conda\condarc'
trace    libmamba Configuration not found at 'C:\ProgramData\conda\.condarc'
trace    libmamba Update configurable 'no_env'
trace    libmamba Compute configurable 'relocate_prefix'
trace    libmamba Compute configurable 'target_prefix_checks'
error    libmamba Expected environment not found at prefix: C:\Miniconda38-x64\Library
critical libmamba Aborting.
info     libmamba ****************** Backtrace End ********************