Fixed issue with lj2024 template

Author: AsafGartner

src/templates/src/include/jam_2024_lj_sections.html

@@ -257,7 +257,7 @@
         <div class="fw6 f5 mb3">March 15 - 24, 2024</div>
       </div>
       <div class="flex items-center g2">
-        {{ if and (not .SubmittedProject.Url) (gt .Timespans.DaysUntilEnd 0) }}
+        {{ if and (not .SubmittedProject) (gt .Timespans.DaysUntilEnd 0) }}
           <a href="{{ .NewProjectUrl }}" class="btn--jam">Create your project</a>
         {{ else }}
           <a href="{{ .DiscordInviteUrl }}" class="btn--jam">Join the Discord</a>