Bug in Chunks - Current versions

Since 1.20.71 my map has been buggy with chunks and this error appears in the console: ERROR [Structure) [[Jigsa w Structure]] couldn't be constructed, no pool name d `minecraft:trial_chambers/chamber/end.

After I updated to 1.20.71 this started, and in the current version (1.20.73) it continues. 

My map does not have experimental features active.

Thank you for your attention and I look forward to resolving the error.