The ..-2F part seems to represent a URL-encoded or similar representation of a path traversal. -2F is often used to represent a forward slash / in certain types of encoding or obfuscation, commonly seen in URL encoding or in attempts to bypass security filters.
Let’s break this string down methodically. -include-..-2F..-2F..-2F..-2Froot-2F
: Leaking database credentials, API keys, or user passwords. or user passwords.