Improve error handling in report operations by providing default error message

Author: adamrefaey

frontend/src/common/api/reportService.ts

@@ -152,7 +152,7 @@ export const markReportAsRead = async (reportId: string): Promise<MedicalReport>
     return response.data;
   } catch (error) {
     if (axios.isAxiosError(error)) {
-      throw new ReportError(`Failed to mark report as read: ${error.message}`);
+      throw new ReportError(`Failed to mark report as read: ${error.message || 'Unknown error'}`);
     }
     throw new ReportError('Failed to mark report as read');
   }
@@ -180,7 +180,9 @@ export const toggleReportBookmark = async (
     return response.data;
   } catch (error) {
     if (axios.isAxiosError(error)) {
-      throw new ReportError(`Failed to toggle bookmark status: ${error.message}`);
+      throw new ReportError(
+        `Failed to toggle bookmark status: ${error.message || 'Unknown error'}`,
+      );
     }
     throw new ReportError('Failed to toggle bookmark status');
   }