On several different XIBs I get a compiler error like
Internal error. Please file a bug at feedbackassistant.apple.com and attach "/var/folders/1v/ 516am8h11fzbmdy9sh r1znh0000an/T/|B-adent-diagnostics 2025-06-30 15-02-36 468000" W
These XIBs were unmodified, the only different was the Xcode version they were compiled against. Any suggestions for a fix, workaround, or troubleshooting? I tried restarting Xcode, restarting macOS, cleaning the build, and deleting derived data.
Workaround: Delete the XIB/Storyboard files that caused compile error and build the project again without cleaning the build folder. If another XIB/Storyboard file fails, delete it as well and repeat the process until the compilation is successful. Afterward, you can restore the deleted XIB/Storyboard files (for example: use git to discard the changes) and build the project again.