HPCC-11343 Should have better errors from the server

Fix implemeted.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>
Merge pull request #6214 from AttilaVamos/HPCC-11343-fix

HPCC-11343 Should have better errors from the server

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>