X_URL_PATHNAME_AS_PATH
Means
a source reads .pathname off a URL built from import.meta.url (or destructures it, or builds a file:// URL from a string) and uses it as a filesystem path
Typical cause
new URL('..', import.meta.url).pathname percent-encodes a space (%20) and answers /C:/… on Windows, so the path names nothing
Fix
Bun.fileURLToPath(new URL('<specifier>', import.meta.url)), or join(import.meta.dir, '<segment>')