The source image could not be decoded

Before version 1.82, 3DTitle can be loaded, but starting from version 1.83, an error is reported. How can this issue be resolved?
A 3D tile failed to load。 Error: Failed to load image:http://xxxxx.b3dm, The source image could not be decoded.

The change log for 1.83 says

  • Dropped support for KTX1 and Crunch textures; use the ktx2ktx2 converter tool to update existing KTX1 files.

which sounds like it could explain the issue. Do you happen to know which texture format the B3DM files contain?

I know about texture updates, and the help I am looking for is how to make existing b3dm files work properly after version 1.83

It might be possible to apply some custom trickery/workarounds here, based on the 3d-tiles-tools library. But it all depends on whether there is a reasonably easy way to read the “old” KTX1 images in the first place. If you could share one of the B3DMs that causes this problem, then I could have a closer look. (In doubt, a single file - maybe even via a private message, if it absolutely cannot be shared publicly - could be enough for first experiments).