could not link file in wal restore lines

could not link file "pg_wal/000000010000015600000098" to "pg_wal/00000001000001570000006E": File exists

In total, I get 18 lines of "could not link file" and 932 lines of "restored log file" lines.

At the end it finishes with:

Before going in production, I wanted to ask, if this is correct like this? I mean are those "could not link file" lines anything to worry about?

Thanks and regards,

Zsolt