pgbench : too many client connections for select()

Question

I was working on benchmark testing for pg10 and pg14.

I did the testing for 100 clients with 12 threads in pg14 I was getting following error,

"pgbench:too many client connections for select()" (screen shot attached)

The same was working fine in pg10, can anybody help me with this issue.

Below is the command used to test,

.\pgbench.exe -d -r -h localhost -U postgres -p 5434 -T 600 -c 100 -j 12 pgbench

Error screenshot(https://i.stack.imgur.com/BOKhu.png)