Hi, yes of course. This is the material used on the doors which are now displaying as black.
Can you add me to your project please username: kpal. Also could you PM me your console history. Details on how to find it are posted here Editor v1.47.0 release with some changes to Materials
I’ve just shared the project with you and this is the link to the history: blob:https://playcanvas.com/043981a6-6ade-40bf-9596-f7aebc5796be
Hopefully this is correct as I’m fairly new to PC. Thank you for looking in to this issue.
Could you download the text file and sent it as a PM to me
Ahh okay so looking at your project it looks like ur ambient color is set to black so reset that to white and it should be fixed for you
Okay… cool… I’ll give that a try… thank you
Yes! that was the issue,… now working correctly. Thanks you.
Does that mean I’ll need to check the ambient for all imported models now,… or will that be updated in the editor?
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They should automatically migrate correctly now when you open the project. Cases like these are from a previous release that had broken migrations but that’s fixed now. Also for reference that log you sent me contains all the information on what material properties were changed in case you want to see them yourself 
Excellent. Yes, I started reading that,… most useful… Thanks again.
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https://playcanvas.com/project/1280290/overview/ceshix7
If I use an old version of the engine in my current project, there will be a problem of high exposure. Is this caused by updating the engine? If I use the latest 1.75.1 engine, the display will be the same as before. How can I solve this problem
https://playcanvas.com/project/1280290/overview/ceshix7
If I use an old version of the engine in my current project, there will be a problem of high exposure. Is this caused by updating the engine? If I use the latest 1.75.1 engine, the display will be the same as before. How can I solve this problem
That’s hard to say. Should you just use the new engine @Guohao6666 ?
If I switch to the latest engine now, all the code in my project will be rewritten. This is not what I want. I hope the official can help me troubleshoot why my project has a scene high exposure problem in version 1.64.4. , this problem was not a problem before
Try setting Tonemapping to Neutral, in Rendering Settings … that seems to do it for me @Guohao6666