I tried in colab"!pip install fastai==1.0.63" but this version apparently doesn’t exist.
Looking in indexes: Simple index, https://us-python.pkg.dev/colab-wheels/public/simple/
ERROR: Could not find a version that satisfies the requirement fastai==1.0.63 (from versions: 0.6, 0.7.0, 1.0.0b7, 1.0.0b8, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.9, 1.0.10, 1.0.11, 1.0.12, 1.0.13, 1.0.14, 1.0.15, 1.0.16, 1.0.17, 1.0.18, 1.0.19, 1.0.20, 1.0.21, 1.0.22, 1.0.24, 1.0.25, 1.0.26, 1.0.27, 1.0.28, 1.0.29, 1.0.30, 1.0.31, 1.0.32, 1.0.33, 1.0.34, 1.0.35, 1.0.36, 1.0.36.post1, 1.0.37, 1.0.38, 1.0.39, 1.0.40, 1.0.41, 1.0.42, 1.0.43.post1, 1.0.44, 1.0.46, 1.0.47, 1.0.47.post1, 1.0.48, 1.0.49, 1.0.50, 1.0.50.post1, 1.0.51, 1.0.52, 1.0.53, 1.0.53.post1, 1.0.53.post2, 1.0.53.post3, 1.0.54, 1.0.55, 1.0.57, 1.0.58, 1.0.59, 1.0.60, 1.0.61, 2.0.0, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.0.10, 2.0.11, 2.0.12, 2.0.13, 2.0.14, 2.0.15, 2.0.16, 2.0.17, 2.0.18, 2.0.19, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5, 2.1.6, 2.1.7, 2.1.8, 2.1.9, 2.1.10, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6, 2.2.7, 2.3.0, 2.3.1, 2.4, 2.4.1, 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.5.4, 2.5.5, 2.5.6, 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.7.0, 2.7.1, 2.7.2, 2.7.3)
ERROR: No matching distribution found for fastai==1.0.63