Home › Forums › KX Academy › Unable to open kx developer notebook ( 500 : Internal Server Error ) KX Academy Unable to open kx developer notebook ( 500 : Internal Server Error ) Posted by Jason on April 28, 2025 at 2:31 pm After launching capstone sandbox I am getting ( 500 : Internal Server Error ) when trying to open KX developer. How do I resolve this issue ? Jason replied 1 week, 3 days ago 2 Members · 6 Replies 6 Replies megan_mcp Administrator April 28, 2025 at 2:35 pm Hi @Jason Can you try waiting 1-2mins and refreshing the screen. If this still does not work, let me know 🙂 Many thanks, Megan Jason Member April 28, 2025 at 2:48 pm Hi @megan_mcp Still getting the same error after waiting and refreshing, anything else I should try ? Thanks, Jason megan_mcp Administrator April 28, 2025 at 2:49 pm Is it okay if I access your server to see if I can investigate this further? Thanks in advance! Jason Member April 28, 2025 at 2:51 pm fine with me 👍 megan_mcp Administrator April 28, 2025 at 3:09 pm Hi @Jason We have stopped and started your server and it should be working fine now! Let me know if you have any problems. Many thanks, Megan Jason Member April 28, 2025 at 3:14 pm Thanks Megan! looks good now 🙂 Jason Log In to Reply Log in to reply. Public All Members Only Me PublicAll MembersOnly Me Public All Members Only Me Log In to Reply Start of Discussion 0 of 0 replies June 2018 Now