Feature fetch: Never pass “fid:undefined” when querying the CGI.

1 files changed, 1 insertions, 1 deletions

diff --git a/main.js b/main.js
index a125a97..1e0e828 100644
--- a/main.js
+++ b/main.js
@@ -5254,7 +5254,7 @@ const infoMetadataAccordions = [];
         fetch_body.push({
           layer_group: layerGroup,
           layer: layerName,
-          fid: feature.getId(),
+          fid: feature.getId() ?? -1,
         });
         if (fetch_body.length >= 100) {
           return true; /* enough matches already, stop detection here */