Not that I'm an expert, but I think it tells you that the 'PL/pgSQL' code (i.e., the languange in which all the procedures in *.sql files are written) is syntactially incorrect, which is rather bad. You should take a look at this wp-slim-drop1.sql file near line 35 and figure out why this code is incorrect (maybe it has not been ported from Oracle yet?).
