WHM and Cpanel is giving 500 internal server error as someone hacked

Hi all, recently I got hacked by someone, though all my websites are in subdomain and working, but i am not being able to edit, delete update any plugin and mostly i cannot login to whm or cpanel at all.. I am getting this error cpsrvd Server at server2.se Internal Server Error 500 Error ID 6fb4b5923991 cpsrvd Server at mystie.test
When I try to see the log using `tail -f /usr/local/cpanel/logs/error_log`, I see this eval {...} called at /usr/local/cpanel/Cpanel/SafeFile.pm line 208 Cpanel::SafeFile::safesysopen(undef, "/var/cpanel/sessions/temp_Cpanel::Mysql_.json", 66, 384) called at /usr/local/cpanel/Cpanel/SafeFile.pm line 123 Cpanel::SafeFile::safesysopen_no_warn_on_fail(undef, "/var/cpanel/sessions/temp_Cpanel::Mysql_.json", 66, 384) called at /usr/local/cpanel/Cpanel/Transaction/File/Base.pm line 128 Cpanel::Transaction::File::Base::new("Cpanel::Transaction::File::JSON", "path", "/var/cpanel/sessions/temp_Cpanel::Mysql_.json", "permissions", 384) called at bin/cpses_tool.pl line 210 bin::cpses_tool::__ANON__() called at /usr/local/cpanel/3rdparty/perl/532/lib/perl5/cpanel_lib/Try/Tiny.pm line 100 eval {...} called at /usr/local/cpanel/3rdparty/perl/532/lib/perl5/cpanel_lib/Try/Tiny.pm line 91 Try::Tiny::try(CODE(0x1b25190), Try::Tiny::Catch=REF(0x1b8df68)) called at bin/cpses_tool.pl line 214 bin::cpses_tool::action_CLEANUPSESSIONS("bin::cpses_tool", HASH(0x1b24e00)) called at bin/cpses_tool.pl line 76 bin::cpses_tool::process_request(HASH(0x1b24e00)) called at bin/cpses_tool.pl line 61 bin::cpses_tool::script("bin::cpses_tool") called at bin/cpses_tool.pl line 34
Anyone can help please?