Command /home/docs/checkouts/readthedocs.org/user_builds/cryptosteganography/envs/latest/bin/python -m pip install --exists-action=w --no-cache-dir -r requirements.txt failed: DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality. Collecting colorama==0.4.4 Downloading colorama-0.4.4-py2.py3-none-any.whl (16 kB) Collecting crayons==0.4.0 Downloading crayons-0.4.0-py2.py3-none-any.whl (4.6 kB) Collecting exitstatus==1.4.0 Downloading exitstatus-1.4.0-py2.py3-none-any.whl (3.2 kB) Collecting piexif==1.1.3 Downloading piexif-1.1.3-py2.py3-none-any.whl (20 kB) ERROR: Could not find a version that satisfies the requirement pillow==8.3.2 (from -r requirements.txt (line 15)) (from versions: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7.0, 1.7.1, 1.7.2, 1.7.3, 1.7.4, 1.7.5, 1.7.6, 1.7.7, 1.7.8, 2.0.0, 2.1.0, 2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.3.2, 2.4.0, 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.6.0, 2.6.1, 2.6.2, 2.7.0, 2.8.0, 2.8.1, 2.8.2, 2.9.0, 3.0.0, 3.1.0rc1, 3.1.0, 3.1.1, 3.1.2, 3.2.0, 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.4.0, 3.4.1, 3.4.2, 4.0.0, 4.1.0, 4.1.1, 4.2.0, 4.2.1, 4.3.0, 5.0.0, 5.1.0, 5.2.0, 5.3.0, 5.4.0, 5.4.1, 6.0.0, 6.1.0, 6.2.0, 6.2.1, 6.2.2) ERROR: No matching distribution found for pillow==8.3.2 (from -r requirements.txt (line 15))