handle startup errors

Signed-off-by: Vladimir Mandic <mandic00@live.com>

CHANGELOG.md

@@ -1,8 +1,8 @@
 # Change Log for SD.Next
 
-## Update for 2025-07-21
+## Update for 2025-07-22
 
-### Highlights for 2025-07-21
+### Highlights for 2025-07-22
 
 Feature highlights include:  
 - **ModernUI** layout redesign which should make it more user friendly and easier to navigate  
@@ -29,7 +29,7 @@ For details, see [ChangeLog](https://github.com/vladmandic/automatic/blob/master
 
 [ReadMe](https://github.com/vladmandic/automatic/blob/master/README.md) | [ChangeLog](https://github.com/vladmandic/automatic/blob/master/CHANGELOG.md) | [Docs](https://vladmandic.github.io/sdnext-docs/) | [WiKi](https://github.com/vladmandic/automatic/wiki) | [Discord](https://discord.com/invite/sd-next-federal-batch-inspectors-1101998836328697867)
 
-### Details for 2025-07-21
+### Details for 2025-07-22
 
 - **License**  
   - SD.Next [license](https://github.com/vladmandic/sdnext/blob/dev/LICENSE.txt) switched from **aGPL-v3.0** to **Apache-v2.0**  
@@ -162,6 +162,7 @@ For details, see [ChangeLog](https://github.com/vladmandic/automatic/blob/master
   - remove legacy clip/blip interrogate module
   - remove modern-ui remove `only-original` vs `only-diffusers` code paths  
   - refactor control processing and separate preprocessing and image save ops  
+  - refactor modernui layouts to rely on accordions more than individual controls  
   - split monolithic `shared.py`  
   - cleanup `/modules`: move pipeline loaders to `/pipelines` root  
   - cleanup `/modules`: move code folders used by pipelines to `/pipelines/<pipeline>` folder  

javascript/changelog.js

@@ -60,6 +60,10 @@ function changelogNavigate(found) {
 async function initChangelog() {
   const search = gradioApp().querySelector('#changelog_search > label> textarea');
   const md = gradioApp().getElementById('changelog_markdown');
+  if (!search || !md) {
+    error('initChangelog', 'Missing search or markdown elements');
+    return;
+  }
   const searchChangelog = async (e) => {
     if (changelogElements.length < 100) changelogElements = getAllChildren(md);
     const found = [];

javascript/gallery.js

@@ -469,6 +469,10 @@ async function initGallery() { // triggered on gradio change to monitor when ui
   el.files = gradioApp().getElementById('tab-gallery-files');
   el.status = gradioApp().getElementById('tab-gallery-status');
   el.search = gradioApp().querySelector('#tab-gallery-search textarea');
+  if (!el.folders || !el.files || !el.status || !el.search) {
+    error('initGallery', 'Missing gallery elements');
+    return;
+  }
   el.search.addEventListener('input', gallerySearch);
   el.btnSend = gradioApp().getElementById('tab-gallery-send-image');
   document.getElementById('tab-gallery-files').style.height = opts.logmonitor_show ? '75vh' : '85vh';

javascript/settings.js

@@ -181,6 +181,10 @@ async function initSettings() {
   if (settingsInitialized) return;
   settingsInitialized = true;
   const tabNavElements = gradioApp().querySelector('#settings > .tab-nav');
+  if (!tabNavElements) {
+    error('initSettings', 'No tab nav elements found');
+    return;
+  }
   const tabNavButtons = gradioApp().querySelectorAll('#settings > .tab-nav > button');
   const tabElements = gradioApp().querySelectorAll('#settings > div:not(.tab-nav)');
   const observer = new MutationObserver((mutations) => {

modules/postprocess/yolo.py

@@ -387,7 +387,7 @@ class YoloRestorer(Detailer):
                 enabled = gr.Checkbox(label="Enable detailer pass", elem_id=f"{tab}_detailer_enabled", value=False)
             with gr.Row():
                 detailers = gr.Dropdown(label="Detailer models", elem_id=f"{tab}_detailers", choices=self.list, value=shared.opts.detailer_models, multiselect=True, visible=True)
-                detailers_text = gr.Textbox(label="Detailer models", elem_id=f"{tab}_detailers_text", placeholder="Comma separated list of detailer models", lines=2, visible=False, interactive=True)
+                detailers_text = gr.Textbox(label="Detailer list", elem_id=f"{tab}_detailers_text", placeholder="Comma separated list of detailer models", lines=2, visible=False, interactive=True)
                 refresh_btn = ui_common.create_refresh_button(detailers, self.enumerate, {}, elem_id=f"{tab}_detailers_refresh")
                 ui_mode = ui_components.ToolButton(value=ui_symbols.view)
                 ui_mode.click(fn=self.change_mode, inputs=[detailers, detailers_text], outputs=[detailers, detailers_text, refresh_btn])

modules/ui_models.py

@@ -364,7 +364,7 @@ def create_ui():
                     create_safetensors = gr.Checkbox(label="Save safetensors", value=True)
                     debug = gr.Checkbox(label="Debug info", value=False)
 
-                model_modules_btn = gr.Button(value="Modules", variant='primary')
+                model_modules_btn = gr.Button(value="Merge Modules", variant='primary')
                 model_modules_btn.click(
                     fn=extras.run_model_modules,
                     inputs=[