Check file, not wrong place. but, problem all mod block.
I know there might be a problem because it is automatically generated.
But can it happen in every block?
https://pastebin.com/LbkDxepc <- blockids.json

oh... my mistake

The config file generated in the missing-configs is not an "auto-generated" config but rather a log, showing you what blocks bluemap could not detect properly.
BlueMap currently can not auto-generate support for your mods!
Sorry ^^