[Koha] Error accessing "About Koha" after the upgrade. 20.5

Good Morning, Error accessing "About Koha" after the upgrade. 19.11.06 to 20.5 Software error: Can't locate object method "structured_requirements_for_module" via package "CPAN::Meta::Requirements" at /usr/share/koha/lib/C4/Installer/PerlModules.pm line 66. Can someone help me? Thank you