ask user to check db when graphs fail to load

qt/aqt/mediasrv.py

@@ -163,7 +163,7 @@ def allroutes(pathin):
         # review screen before an image had finished
         # downloading
         return flask.make_response(
-            "For path '%s - %s' %s!" % (directory, path, error),
+            str(error),
             HTTPStatus.INTERNAL_SERVER_ERROR,
         )
 
@@ -204,9 +204,4 @@ def _redirectWebExports(path):
 
 
 def graph_data(col: Collection, search: str, days: int) -> bytes:
-    try:
     return col.backend.graphs(search=search, days=days)
-    except Exception as e:
-        # likely searching error
-        print(e)
-        return b""

rslib/ftl/statistics.ftl

@@ -177,3 +177,6 @@ statistics-elapsed-time-months = {$amount}mo
 statistics-elapsed-time-years = {$amount}y
 
 ##
+
+statistics-error-fetching = Invalid data found - please use Check Database to fix the problem.
+

ts/src/stats/GraphsPage.svelte

@@ -38,7 +38,12 @@
 
     const refresh = async () => {
         refreshing = true;
+        try {
             sourceData = await getGraphData(search, days);
+        } catch (e) {
+            sourceData = null;
+            alert(i18n.tr(i18n.TR.STATISTICS_ERROR_FETCHING));
+        }
         refreshing = false;
     };