i'm using collaborative viewer template fatal error

Development Architectural and Design Visualization
1

How can I fix this?Packaged done without problems but when I run the exe file I got this messgae

462554994_444599092002389_3766926799166213044_n
462554994_444599092002389_3766926799166213044_n2040×1530 102 KB

2

i’m using ue 5.5 version