install group_concat UDAF aggregate function in Vertica 8.0.0-2

i got Vertica-Extension-Packages from git (link) and i upgrade vertica from 7.2.0 to 8.0.0-2 and after the upgrade i try to recompile it so i go to the folder and type:

$make uninstall
$make install
after that i try to run:

select group_concat(node_name) over() from nodes;
and get this error: ERROR 5861: Error calling getReturnType() in User Function group_concat at [src/GroupConcat.cpp:86], error code: 0, message: Function only accepts 1 argument, but 614891469...provided

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