This situation is not a specific file, nor a specific EXR file, but all scenes, including the default blank scene. I used to do a material library for ambient light. At the time, the Corona version was 1.7 and everything was fine. But after changing the new version of the test, I found this problem. I also tried to change other EXR files. The Corona bimap also could not read the display format error. Today I let other friends confirm that they have encountered the same. So I want to know if this is a bug or a special case.