Here is the beginning of the error. It is saying that the HEIC file is invalid, but others were able to convert the file to a JPG and view it that way.
Exception:
System.FormatException: The HEIC file is invalid.
at HeicFileTypePlus.HeicNative.HandleReadError(Status status)
at HeicFileTypePlus.HeicFile.Load(Stream input)
at PaintDotNet.FileType.Load(Stream input) in D:\src\pdn\src_4_3_x\Data\FileType.cs:line 498
at PaintDotNet.Functional.Func.Eval[T1,TRet](Func`2 f, T1 arg1) in D:\src\pdn\src_4_3_x\Base\Functional\Func.cs:line 158