I have the new BB Posts working well for IDAA now. NOTE: I intentionally split the API calls that are triggered on layout and page loads.

src/routes/journals/[journal_id]/+layout.ts

@@ -1,6 +1,7 @@
 /** @type {import('./$types').LayoutLoad} */
 console.log(`ae_l_journals [journal_id] +layout.ts start`);
 
+import { error } from '@sveltejs/kit';
 import { browser } from '$app/environment';
 import { journals_func } from '$lib/ae_journals/ae_journals_functions';
 
@@ -30,7 +31,7 @@ export async function load({ params, parent }) {
             console.log(`ae_journals journals [journal_id] +page.ts: journal_id = `, journal_id);
         }
         // Load event journal object
-        let load_journal_obj = journals_func.load_ae_obj_id__journal({
+        let load_journal_obj = await journals_func.load_ae_obj_id__journal({
             api_cfg: ae_acct.api,
             journal_id:  journal_id,
             inc_entry_li: true,
@@ -39,6 +40,21 @@ export async function load({ params, parent }) {
             limit: 99,
             try_cache: true,
             log_lvl: log_lvl
+        })
+        .then((results) => {
+            if (!results) {
+                error(404, {
+                    message: 'Journals - Journal not found'
+                });
+            } else {
+                // ae_acct.slct.journal_obj = results;
+            }
+        // })
+        // .catch((err) => {
+        //     console.error(`Error loading journal object:`, err);
+        //     error(500, {
+        //         message: 'Journals - Error loading journal object'
+        //     });
         });
 
         ae_acct.slct.journal_obj = load_journal_obj;

src/routes/journals/[journal_id]/entry/[journal_entry_id]/+page.ts

@@ -34,14 +34,20 @@ export async function load({ params, parent }) { // route
             console.log(`ae_journals journals [journal_entry_id] +page.ts: journal_entry_id = `, journal_entry_id);
         }
         // Load event journal entry object
-        let load_journal_obj = journals_func.load_ae_obj_id__journal_entry({
+        let load_journal_entry_obj = journals_func.load_ae_obj_id__journal_entry({
             api_cfg: ae_acct.api,
             journal_entry_id:  journal_entry_id,
             try_cache: true,
             log_lvl: log_lvl
         });
 
-        ae_acct.slct.journal_obj = load_journal_obj;
+        if (!load_journal_entry_obj) {
+            error(404, {
+                message: 'Journals - Journal Entry not found'
+            });
+        } else {
+            ae_acct.slct.journal_obj = load_journal_entry_obj;
+        }
     }
 
     // WARNING: Precaution against shared data between sites.