More error handling, central error function

scripts/functions.sh

@@ -0,0 +1,30 @@
+#
+# utility functions for all scripts
+#
+
+fail() {
+    echo "EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE"
+    if [ "$1" != "" ]; then
+        echo ERROR: $1
+    else
+        echo An error occurred.
+    fi
+    cat <<EOF
+
+Error downloading Stable Diffusion UI. Sorry about that, please try to:
+ 1. Run this installer again.
+ 2. If that doesn't fix it, please try the common troubleshooting steps at https://github.com/cmdr2/stable-diffusion-ui/wiki/Troubleshooting
+ 3. If those steps don't help, please copy *all* the error messages in this window, and ask the community at https://discord.com/invite/u9yhsFmEkB
+ 4. If that doesn't solve the problem, please file an issue at https://github.com/cmdr2/stable-diffusion-ui/issues
+
+Thanks!
+
+
+EOF
+    read -p "Press any key to continue"
+    exit 1
+
+}
+
+
+