A known issue: Rev. A.03 had strict dependency on versions; on newer Linux distributions (e.g., Ubuntu 20.04+), users sometimes had to use compatibility libraries or containerization (Docker/Singularity).
Released following the initial launch of Gaussian 16, Revision A.03 represents a mature, refined, and highly reliable version of the software. It was the version many academic and industrial research groups adopted for routine high-level quantum chemical calculations. This article dives deep into the features, capabilities, performance benchmarks, known quirks, and legacy of Gaussian 16 Rev. A.03. Gaussian 16 Revision A.03
A solid workhorse, but show its age. For production work, patch or upgrade if you encounter instability. A known issue: Rev