don't show error when project does not exist

CHANGELOG

@@ -7,6 +7,8 @@ minerva (15.1.1) stable; urgency=medium
     project returned access denied status insted Not Found (#1370)
   * Bug fix: results for chembl targetting uniprot without gene name (for
     example P0C2L1)  could crash caching (#1377)
+  * Bug fix: removing non-existing project results in warning not an error
+    message (#1367)
 
  -- Piotr Gawron <piotr.gawron@uni.lu>  Thu, 23 Nov 2020 15:00:00 +0200
 

frontend-js/src/main/js/gui/admin/MapsAdminPanel.js

@@ -9,6 +9,7 @@ var EditProjectDialog = require('./EditProjectDialog');
 var LogListDialog = require('./LogListDialog');
 var PrivilegeType = require('../../map/data/PrivilegeType');
 var ConfigurationType = require('../../ConfigurationType');
+var NetworkError = require('../../NetworkError');
 
 // noinspection JSUnusedLocalSymbols
 var logger = require('../../logger');
@@ -163,7 +164,14 @@ MapsAdminPanel.prototype._createProjectTableRow = function () {
       if (param.status) {
         return self.removeProject($(button).attr("data"))
       }
-    }).catch(GuiConnector.alert);
+    }).catch(function (e) {
+      if (e instanceof NetworkError && e.statusCode === 404) {
+        GuiConnector.warn("Project does not exist")
+        return self.onRefreshClicked();
+      } else {
+        GuiConnector.alert(e);
+      }
+    });
   });
 
   $(projectsTable).on("click", "[name='showEditDialog']", function () {