Dependency Installation Error

[Laknath1996]

When I ran the pip install -r requirements.txt command, the following error was generated when attempting to collect the distributions of scipy and matplotlib.

ERROR: Could not find a version that satisfies the requirement scipy==1.6.3 (from versions: 0.8.0, 0.9.0, 0.10.0, 0.10.1, 0.11.0, 0.12.0, 0.12.1, 0.13.0, 0.13.1, 0.13.2, 0.13.3, 0.14.0, 0.14.1, 0.15.0, 0.15.1, 0.16.0, 0.16.1, 0.17.0, 0.17.1, 0.18.0, 0.18.1, 0.19.0, 0.19.1, 1.0.0b1, 1.0.0rc1, 1.0.0rc2, 1.0.0, 1.0.1, 1.1.0rc1, 1.1.0, 1.2.0rc1, 1.2.0rc2, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.3.0rc1, 1.3.0rc2, 1.3.0, 1.3.1, 1.3.2, 1.3.3, 1.4.0rc1, 1.4.0rc2, 1.4.0, 1.4.1, 1.5.0rc1, 1.5.0rc2, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.5.4)
ERROR: No matching distribution found for scipy==1.6.3

ERROR: Could not find a version that satisfies the requirement matplotlib>=3.4.1 (from versions: 0.86, 0.86.1, 0.86.2, 0.91.0, 0.91.1, 1.0.1, 1.1.0, 1.1.1, 1.2.0, 1.2.1, 1.3.0, 1.3.1, 1.4.0, 1.4.1rc1, 1.4.1, 1.4.2, 1.4.3, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 2.0.0b1, 2.0.0b2, 2.0.0b3, 2.0.0b4, 2.0.0rc1, 2.0.0rc2, 2.0.0, 2.0.1, 2.0.2, 2.1.0rc1, 2.1.0, 2.1.1, 2.1.2, 2.2.0rc1, 2.2.0, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 3.0.0rc2, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.1.0rc1, 3.1.0rc2, 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.2.0rc1, 3.2.0rc3, 3.2.0, 3.2.1, 3.2.2, 3.3.0rc1, 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.3.4)
ERROR: No matching distribution found for matplotlib>=3.4.1

System and environment specs:

MacOS 10.14.6 Python 3.6.13

Every other dependency got collected properly. I removed the scipy and matplotlib entries from the requirements.txt and installed them separately (scipy 1.5.4 and matplotlib 3.3.4).