Git error with code 'err 8'

$ git push

Username for 'https://github.com': abc@xyz.com
Password for 'https://abc@xyz.com@github.com': 
Enumerating objects: 141, done.
Counting objects: 100% (141/141), done.
Delta compression using up to 2 threads
Compressing objects: 100% (137/137), done.
error: RPC failed; curl 92 HTTP/2 stream 0 was not closed cleanly: CANCEL (err 8)
fatal: the remote end hung up unexpectedly
Writing objects: 100% (140/140), 1.23 GiB | 9.97 MiB/s, done.
Total 140 (delta 10), reused 1 (delta 0)
fatal: the remote end hung up unexpectedly
Everything up-to-date

$ git add -A
$ git commit -m "tech books feb 2021" 

[main 2bb4082] tech books feb 2021
21 files changed, 83453 deletions(-)
delete mode 100755 abc.pdf
...
delete mode 100755 def.pdf

Deleting large files did not help. Rather it increased the number of items in 'writing objects' log line.
The fix is to do a 'git reset --hard [commit hash]'

$ git push

Username for 'https://github.com': abc@xyz.com
Password for 'https://abc@xyz.com@github.com': 
Enumerating objects: 144, done.
Counting objects: 100% (144/144), done.
Delta compression using up to 2 threads
Compressing objects: 100% (140/140), done.
error: RPC failed; curl 92 HTTP/2 stream 0 was not closed cleanly: CANCEL (err 8)
fatal: the remote end hung up unexpectedly
Writing objects: 100% (143/143), 1.24 GiB | 6.00 MiB/s, done.
Total 143 (delta 11), reused 1 (delta 0)
fatal: the remote end hung up unexpectedly
Everything up-to-date

-- -- --

Ref: confluence.atlassian.com
Tags: Technology,GitHub