PG Bug reporting form <[hidden email]> writes:
> create extension postgres_fdw;
> ERROR: could not load library "/usr/pgsql-10/lib/postgres_fdw.so":
> /usr/pgsql-10/lib/postgres_fdw.so: undefined symbol:
This looks like a version mismatch problem --- your postgres_fdw is newer than your server (possibly just a minor release newer, but still newer).
It's unfortunate that the error message isn't more on-point, but we don't have enough control over the dynamic linker to make it so.
regards, tom lane
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