"Failed to load commit json object" and "Failed to get commit" in seafile.log

I run Seafile Server 7.0.2 on Ubuntu 16.04 and get the following error from the seafile.log when uploading a 620 MB file via a public share link. The upload once gave “Network error” and once it was successful but in both cases I see the following error.

[01/23/2020 03:29:01 PM] ../common/commit-mgr.c(854): Failed to load commit json object: '[' or '{' expected near '?'.
[01/23/2020 03:29:01 PM] virtual-repo.c(866): Failed to get commit 2c45ddc4-10b9-47c1-8560-26a81a6fa990:bece4693.
[01/23/2020 03:29:03 PM] ../common/commit-mgr.c(854): Failed to load commit json object: '[' or '{' expected near '?'.
[01/23/2020 03:29:03 PM] virtual-repo.c(866): Failed to get commit 2c45ddc4-10b9-47c1-8560-26a81a6fa990:bece4693.