Private Version not working (infinite flight)

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Other

Summary

When I run the game through the editor, I’m fine and I appear at the spawn point, but when I go to the island through the private code, I am just fly in the air and the island is not rendered.

Steps to Reproduce

Just connect to this island.

Expected Result

Start game and players will spawn on pads

Observed Result

You’ll just be flying around in an empty island.

Platform(s)

PC

Island Code

8388-4123-6644

AssetCheck: Error: /FirstWorld/DotaMap Warnings logged when checking the resource Material /Game/Environments/Apollo/Sets/BeachyBluffs/Materials/MI_Lighthouse4.MI_Lighthouse4 missing bUsedWithInstancedStaticMeshes=True! Default Material will be used in game.
CP_M_Apollo_ColorTree_Master The bUsedWithInstancedStaticMeshes flag is missing for material /Game/Creative/Environments/ApolloTrees/Materials/CP_MI_Apollo_ColorTree_RedAlder2_Trunk.CP_MI_Apollo_ColorTree_RedAlder2_Trunk. If a material resource has not been re-saved, it may not be rendered correctly when run outside of the editor. Fix

This is not mine materials. This is default material and I can’t change the default material.
How can I fix it ? Please help me someone