fix: report filename if template file is invalid A file name like .#issue.search.html causes a crash because _find returns None not a tuple and unpacking fails. Trap the TypeError and raise ValueError with message that includes the basename of the file.

#!/usr/bin/env python
from __future__ import print_function
import zlib, base64, sys
print(base64.encodestring(zlib.compress(sys.stdin.read())))