[EOSIO/eos] ‘eosiolib/core_symbol.hpp’ file not found (#5419)

When I compile my code for abi , I got the following error. However, if I compile the code with v1.1.0, the compilation is fine. Any suggestion?

$ eosiocpp -o testapp.wast testapp.cpp —No error
$eosiocpp -g testapp.abi testapp.cpp
In file included from ~/myapp/eos/contracts/testapp/testapp.cpp:1:
In file included from ~/myapp/eos/contracts/testapp/testapp.hpp:14:
In file included from ~/myapp/eos/contracts/eosiolib/asset.hpp:5:
~/myapp/eos/contracts/eosiolib/symbol.hpp:2:10: fatal error: ‘eosiolib/core_symbol.hpp’ file not found
#include
^~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
Error while processing ~/myapp/eos/contracts/testapp/testapp.cpp.