This version of Unity is unsupported.
Method group is Obsolete

TextureFormat.ASTC_RGBA_5x5

Obsolete Enum member TextureFormat.ASTC_RGBA_5x5 has been deprecated. Use ASTC_5x5 instead.
Upgrade to ASTC_5x5

Description

ASTC (5x5 pixel block in 128 bits) compressed RGBA texture format.

See Also: TextureImporter.textureFormat.