gnat_avr_elf 12.2.1

We encountered an error during the generation of documentation:
gnat_avr_elf.gpr: info: Parsing "/home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_avr_elf/12.2.1/gnat_avr_elf_12.2.1_8e59f77f/gnat_avr_elf.gpr"
gnat_avr_elf.gpr: info: search path:
gnat_avr_elf.gpr: info: /home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_avr_elf/12.2.1/gnat_avr_elf_12.2.1_8e59f77f
gnat_avr_elf.gpr: info: /home/chouteau/.config/alire/cache/dependencies/gnat_native_12.1.2_66b989b5
gnat_avr_elf.gpr: info: /home/chouteau/.config/alire/cache/dependencies/gprbuild_22.0.1_24dfc1b5
gnat_avr_elf.gpr: info: /home/chouteau/.config/alire/cache/dependencies/gnat_native_12.1.2_66b989b5/x86_64-linux/share/gpr
gnat_avr_elf.gpr: info: /home/chouteau/.config/alire/cache/dependencies/gnat_native_12.1.2_66b989b5/x86_64-linux/lib/gnat
gnat_avr_elf.gpr: info: /home/chouteau/.config/alire/cache/dependencies/gnat_native_12.1.2_66b989b5/share/gpr
gnat_avr_elf.gpr: info: /home/chouteau/.config/alire/cache/dependencies/gnat_native_12.1.2_66b989b5/lib/gnat
gnat_avr_elf.gpr: error: project file "/home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_avr_elf/12.2.1/gnat_avr_elf_12.2.1_8e59f77f/gnat_avr_elf.gpr" not found

raised GPR2.PROJECT_ERROR : /home/chouteau/src/github/alire/docs.ada.dev/tmp/gnat_avr_elf/12.2.1/gnat_avr_elf_12.2.1_8e59f77f/gnat_avr_elf.gpr: fatal error, cannot load the project tree
ERROR: Command ["gnatdoc4", "-P", "gnat_avr_elf.gpr", "--output-dir", "/home/chouteau/src/github/alire/docs.ada.dev/crate/gnat_avr_elf/12.2.1", "--front-matter", "crate: gnat_avr_elf", "--no-subprojects"] exited with code 1