diff -r 38fcf5707295 -r 3ddd03309315 cubicweb/server/querier.py
--- a/cubicweb/server/querier.py	Sun Feb 02 22:15:38 2020 +0100
+++ b/cubicweb/server/querier.py	Wed Mar 13 00:15:48 2019 +0100
@@ -634,7 +634,7 @@
         # some cache usage stats
         self.cache_hit, self.cache_miss = 0, 0
         # rql parsing / analysing helper
-        self.solutions = repo.vreg.solutions
+        self.compute_var_types = repo.vreg.compute_var_types
         rqlhelper = repo.vreg.rqlhelper
         # set backend on the rql helper, will be used for function checking
         rqlhelper.backend = repo.config.system_source_config['db-driver']
@@ -677,7 +677,7 @@
             # which are eids. Notice that if you may not need `eidkeys`, we
             # have to compute solutions anyway (kept as annotation on the
             # tree)
-            eidkeys = self.solutions(cnx, rqlst, args)
+            eidkeys = self.compute_var_types(cnx, rqlst, args)
             if args and rql not in self._ck_cache:
                 self._ck_cache[rql] = eidkeys
                 if eidkeys: