Fixed debug logging.
diff --git a/src/http/v2/ngx_http_v2.c b/src/http/v2/ngx_http_v2.c
index 79c4f17..3d3afaf 100644
--- a/src/http/v2/ngx_http_v2.c
+++ b/src/http/v2/ngx_http_v2.c
@@ -4214,8 +4214,8 @@
 
                 /* update chains */
 
-                ngx_log_error(NGX_LOG_DEBUG, fc->log, 0,
-                              "http2 body update chains");
+                ngx_log_debug0(NGX_LOG_DEBUG_HTTP, fc->log, 0,
+                               "http2 body update chains");
 
                 rc = ngx_http_v2_filter_request_body(r);