Add filter for malformed path and mappings.wasm

[DavOnGit]

Hi Steven, i've done a couple of little fixes to make it work on my side, checkitout...

[excessivecoding]

Thanks a lot for the different cases, it will be really useful. I will look into that asap

Do you have an example available by any chance ?

[DavOnGit]

https://github.com/DavOnGit/remix-crash-demo