minecraft:endcity/third_floor_c

Thank you for your report!
However, we are already tracking this issue, and this report is a Duplicate of MC-106510, which is a report that has not been resolved yet.

If you want, you can upvote the parent ticket, and enable watching to receive any updates about it - if you believe you have any information that may be important for this issue, please leave a comment on the parent. Please also use the search function in the future to prevent duplicate reports.

Quick Links:
📓 Issue Guidelines – 🛠 Community Support – 📧 Customer Support – ✍️ Feedback and Suggestions – 📖 Game Wiki
💬 Mojira Subreddit – 💬 Mojira Discord

Thank you for the response However the structure name third_floor_c its indeed missing in current Version cuz even checked the jar

However the rest of those named structure in my last message name the d at end of mirrored make that to long and last number on those end of stairs also to long just wanna to say if i paste just structure names without minecraft: so its auto included and click load and it gives the area and i do the same progress again ctrl + A then ctrl + v and click load, it load those below but know its should be its included minecraft: just wanna to let you know that and will now looking forward to fix 🙂

bastion/hoglin_stable/starting_pieces/stairs_0_mirrored
bastion/hoglin_stable/starting_pieces/stairs_1_mirrored
bastion/hoglin_stable/starting_pieces/stairs_2_mirrored
bastion/hoglin_stable/starting_pieces/stairs_3_mirrored
bastion/hoglin_stable/starting_pieces/stairs_4_mirrored
bastion/hoglin_stable/starting_pieces/starting_stairs_0
bastion/hoglin_stable/starting_pieces/starting_stairs_1
bastion/hoglin_stable/starting_pieces/starting_stairs_2
bastion/hoglin_stable/starting_pieces/starting_stairs_3
bastion/hoglin_stable/starting_pieces/starting_stairs_4

an other too long structure name to load bastion/treasure/connectors/center_to_wall_top_entrance

if i could suggest something here about those too long structures. not to try tell ya how to do yours job but that had in mind that to change the name of those so are below:

bastion/hoglin_stable/starting_pieces/stairs_0_mirrored - to - bastion/hoglin_stable/starting_pieces/stairs_0_mirrore (removed d at end)
bastion/hoglin_stable/starting_pieces/stairs_1_mirrored - to - bastion/hoglin_stable/starting_pieces/stairs_1_mirrore (removed d at end)
bastion/hoglin_stable/starting_pieces/stairs_2_mirrored - to - bastion/hoglin_stable/starting_pieces/stairs_2_mirrore (removed d at end)
bastion/hoglin_stable/starting_pieces/stairs_3_mirrored - to - bastion/hoglin_stable/starting_pieces/stairs_3_mirrore (removed d at end)
bastion/hoglin_stable/starting_pieces/stairs_4_mirrored - to - bastion/hoglin_stable/starting_pieces/stairs_4_mirrore (removed d at end)
bastion/hoglin_stable/starting_pieces/starting_stairs_0 - to - bastion/hoglin_stable/starting_pieces/starting_stairs0 (removed _ at end before number)
bastion/hoglin_stable/starting_pieces/starting_stairs_1 - to - bastion/hoglin_stable/starting_pieces/starting_stairs1 (removed _ at end before number)
bastion/hoglin_stable/starting_pieces/starting_stairs_2 - to - bastion/hoglin_stable/starting_pieces/starting_stairs2 (removed _ at end before number)
bastion/hoglin_stable/starting_pieces/starting_stairs_3 - to - bastion/hoglin_stable/starting_pieces/starting_stairs3 (removed _ at end before number)
bastion/hoglin_stable/starting_pieces/starting_stairs_4 - to - bastion/hoglin_stable/starting_pieces/starting_stairs4 (removed _ at end before number)

still in latest release for snapshot