Changed the shadow code in accordance with new syntax for hyprland 0.45.0.

.config/hypr/hyprland.conf

@@ -114,10 +114,12 @@ decoration {
     active_opacity = 1.0
     inactive_opacity = 1.0
 
-    drop_shadow = true
-    shadow_range = 4
-    shadow_render_power = 3
-    col.shadow = rgba(1a1a1aee)
+    shadow {
+        enabled = true
+        range = 4
+        render_power = 3
+        color = rgba(1a1a1aee)
+    }
 
     # https://wiki.hyprland.org/Configuring/Variables/#blur
     blur {