Avoid accessing undefined properties in Page (#4173)
Avoid accessing undefined properties in Page (#4173)

* Avoid accessing undefined properties in Page

* php-cs-fixer


Former-commit-id: d46342da9f6295bd4882a2c0c6ef40d40274bb1a
Former-commit-id: fdff0a73e24fbe8e61e078c02b9925f88ffaa335
acliss19xx/concrete5,mainio/concrete5,MrKarlDilkington/concrete5,MrKarlDilkington/concrete5,deek87/concrete5,biplobice/concrete5,hissy/concrete5,biplobice/concrete5,biplobice/concrete5,jaromirdalecky/concrete5,hissy/concrete5,concrete5/concrete5,triplei/concrete5-8,olsgreen/concrete5,haeflimi/concrete5,mainio/concrete5,haeflimi/concrete5,hissy/concrete5,rikzuiderlicht/concrete5,deek87/concrete5,olsgreen/concrete5,concrete5/concrete5,mlocati/concrete5,haeflimi/concrete5,rikzuiderlicht/concrete5,triplei/concrete5-8,jaromirdalecky/concrete5,concrete5/concrete5,KorvinSzanto/concrete5,mlocati/concrete5,mlocati/concrete5,rikzuiderlicht/concrete5,biplobice/concrete5,KorvinSzanto/concrete5,KorvinSzanto/concrete5,concrete5/concrete5,haeflimi/concrete5,mainio/concrete5,jaromirdalecky/concrete5,a3020/concrete5,hissy/concrete5,deek87/concrete5,a3020/concrete5,MrKarlDilkington/concrete5,triplei/concrete5-8,deek87/concrete5,olsgreen/concrete5,mlocati/concrete5,acliss19xx/concrete5,jaromirdalecky/concrete5,acliss19xx/concrete5