From 59c6511494c55a578eecdf71fb4590b6bd5d04a7 Mon Sep 17 00:00:00 2001
From: Dean van Dugteren <31391056+deanpress@users.noreply.github.com>
Date: Sun, 11 Dec 2022 17:08:51 +0100
Subject: [PATCH] fix: fallback model_checkpoint if it's empty

This fixes the following error when SD attempts to start with a deleted checkpoint:

```
Traceback (most recent call last):
  File "D:\Web\stable-diffusion-webui\launch.py", line 295, in <module>
    start()
  File "D:\Web\stable-diffusion-webui\launch.py", line 290, in start
    webui.webui()
  File "D:\Web\stable-diffusion-webui\webui.py", line 132, in webui
    initialize()
  File "D:\Web\stable-diffusion-webui\webui.py", line 62, in initialize
    modules.sd_models.load_model()
  File "D:\Web\stable-diffusion-webui\modules\sd_models.py", line 283, in load_model
    checkpoint_info = checkpoint_info or select_checkpoint()
  File "D:\Web\stable-diffusion-webui\modules\sd_models.py", line 117, in select_checkpoint
    checkpoint_info = checkpoints_list.get(model_checkpoint, None)
TypeError: unhashable type: 'list'
```
---
 modules/sd_models.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/sd_models.py b/modules/sd_models.py
index 5b37f3fe..b6d75db7 100644
--- a/modules/sd_models.py
+++ b/modules/sd_models.py
@@ -111,6 +111,10 @@ def model_hash(filename):
 
 def select_checkpoint():
     model_checkpoint = shared.opts.sd_model_checkpoint
+    
+    if len(model_checkpoint) == 0:
+        model_checkpoint = shared.default_sd_model_file
+        
     checkpoint_info = checkpoints_list.get(model_checkpoint, None)
     if checkpoint_info is not None:
         return checkpoint_info