Please I need some help with this. Trying to this on Ubuntu 18.04
$ make check && sudo make install
Making check in src
make[1]: Entering directory '/usr/src/bitcoin/src'
make[2]: Entering directory '/usr/src/bitcoin/src'
make[3]: Entering directory '/usr/src/bitcoin'
make[3]: Leaving directory '/usr/src/bitcoin'
make check-TESTS check-local
make[3]: Entering directory '/usr/src/bitcoin/src'
make[4]: Entering directory '/usr/src/bitcoin/src'
make[5]: Entering directory '/usr/src/bitcoin'
make[5]: Leaving directory '/usr/src/bitcoin'
FAIL: test/test_bitcoin
PASS: qt/test/test_bitcoin-qt
============================================================================
Testsuite summary for Bitcoin Core 0.16.2
============================================================================
# TOTAL: 2
# PASS: 1
# SKIP: 0
# XFAIL: 0
# FAIL: 1
# XPASS: 0
# ERROR: 0
============================================================================
See src/test-suite.log
Please report to https://github.com/bitcoin/bitcoin/issues
============================================================================
Makefile:9587: recipe for target 'test-suite.log' failed
make[4]: *** [test-suite.log] Error 1
make[4]: Leaving directory '/usr/src/bitcoin/src'
Makefile:9693: recipe for target 'check-TESTS' failed
make[3]: *** [check-TESTS] Error 2
make[3]: Leaving directory '/usr/src/bitcoin/src'
Makefile:9799: recipe for target 'check-am' failed
make[2]: *** [check-am] Error 2
make[2]: Leaving directory '/usr/src/bitcoin/src'
Makefile:9480: recipe for target 'check-recursive' failed
make[1]: *** [check-recursive] Error 1
make[1]: Leaving directory '/usr/src/bitcoin/src'
Makefile:747: recipe for target 'check-recursive' failed
make: *** [check-recursive] Error 1