trigger lookup only if pooler is set

pkg/cluster/sync.go

@@ -760,10 +760,12 @@ func (c *Cluster) syncDatabases() error {
 
 	if len(createDatabases) > 0 {
 		// trigger creation of pooler objects in new database in syncConnectionPooler
+		if c.ConnectionPooler != nil {
 			for _, role := range [2]PostgresRole{Master, Replica} {
 				c.ConnectionPooler[role].LookupFunction = false
 			}
 		}
+	}
 
 	// set default privileges for prepared database
 	for _, preparedDatabase := range preparedDatabases {