fix encoding issue


(cherry picked from commit 067010fc)
6 jobs for dev in 7 minutes and 23 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Test
passed php7.2_mariadb10.2 #585335

00:02:51

passed php7.2_mysql5.7 #585333

00:05:00

passed php7.2_mysql8 #585334

00:04:30

passed php7.2_postgres11 #585337

00:02:18

passed php7.3_mariadb10.3 #585336

00:02:47

passed php7.3_postgres11 #585338

00:02:16