diff -r 21274e5950af -r a1f4cb076d2f src/server/util/pblock.cpp
--- a/src/server/util/pblock.cpp	Tue Aug 13 22:14:32 2019 +0200
+++ b/src/server/util/pblock.cpp	Sat Sep 24 16:26:10 2022 +0200
@@ -324,7 +324,12 @@
 const pb_key *const pb_key_vary = _create_key("vary");
 const pb_key *const pb_key_via = _create_key("via");
 const pb_key *const pb_key_warning = _create_key("warning");
-
+const pb_key *const pb_key_depth = _create_key("depth");
+const pb_key *const pb_key_if = _create_key("if");
+const pb_key *const pb_key_vfs = _create_key("vfs");
+const pb_key *const pb_key_dav = _create_key("dav");
+const pb_key *const pb_key_vfsclass = _create_key("vfsclass");
+const pb_key *const pb_key_davclass = _create_key("davclass");
 
 /* ------------------------------ _find_key ------------------------------- */