That doesn’t include the stack trace unfortunately, that would have been written into a separate crash report. These get written in ‘%PROJECT_DIR%/Saved/Crashes’ when it happens in the the editor, not sure where they would go for a shipping build sorry.
Each crash will generate a directory with a name along the lines of ‘crashinfo-YourProject-pid-BIG_HEX_NUMBER’ and within you would find a Diagnostics.txt, which contains the stack trace.
As to the cause, it is almost certainly a memory bug, something has been freed while there are references to it still existent, which then get used leading to a vtable lookup snafu and the resulting (inaccurate/impossible) error message.