gnat_native 12.2.1

We encountered an error during the generation of documentation:
gnat_native.gpr: info: Parsing "/home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_native/12.2.1/gnat_native_12.2.1_11f3b811/gnat_native.gpr"
gnat_native.gpr: info: search path:
gnat_native.gpr: info: /home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_native/12.2.1/gnat_native_12.2.1_11f3b811
gnat_native.gpr: info: /home/chouteau/.config/alire/cache/dependencies/gprbuild_22.0.1_24dfc1b5
gnat_native.gpr: info: /home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_native/12.2.1/gnat_native_12.2.1_11f3b811/x86_64-linux/share/gpr
gnat_native.gpr: info: /home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_native/12.2.1/gnat_native_12.2.1_11f3b811/x86_64-linux/lib/gnat
gnat_native.gpr: info: /home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_native/12.2.1/gnat_native_12.2.1_11f3b811/share/gpr
gnat_native.gpr: info: /home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_native/12.2.1/gnat_native_12.2.1_11f3b811/lib/gnat
gnat_native.gpr: error: project file "/home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_native/12.2.1/gnat_native_12.2.1_11f3b811/gnat_native.gpr" not found

raised GPR2.PROJECT_ERROR : /home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_native/12.2.1/gnat_native_12.2.1_11f3b811/gnat_native.gpr: fatal error, cannot load the project tree
ERROR: Command ["gnatdoc4", "-P", "gnat_native.gpr", "--output-dir", "/home/chouteau/src/github/alire/docs.ada.dev/crate/gnat_native/12.2.1", "--front-matter", "crate: gnat_native", "--no-subprojects"] exited with code 1