Installation MacPort in BigSur fails

[ja-Bertolin]

Hi,

I am trying to install GPREDICT in MacOS BigSur and I am getting some error messages , any help will be much appreciated

error:build Failed to build py27-cairo: command execution failed
:debug:build Error code: CHILDSTATUS 31213 1
:debug:build Backtrace: command execution failed
:debug:build while executing
:debug:build "system {}$notty {}$callback {*}$nice $fullcmdstring"
:debug:build invoked from within
:debug:build "command_exec -callback portprogress::target_progress_callback build"
:debug:build (procedure "portbuild::build_main" line 8)
:debug:build invoked from within
:debug:build "$procedure $targetname"