Synapse fails to start after upgrade to 1.1.0 #5652

Hi,

First, my setup is a prebuilt packages on Debian 9. I upgrade my synapse server from 0.99 to 1.1.0 and it doesn't start with this error :

2019-07-10 11:30:45,071 - root - 225 - WARNING - None- ***** STARTING SERVER *****
2019-07-10 11:30:45,075 - root - 226 - WARNING - None- Server /opt/venvs/matrix-synapse/lib/python3.5/site-packages/synapse/app/homeserver.py version 1.1.0
2019-07-10 11:30:45,076 - twisted - 253 - ERROR - - Traceback (most recent call last):
2019-07-10 11:30:45,077 - twisted - 253 - ERROR - - File "/usr/lib/python3.5/runpy.py", line 193, in _run_module_as_main
2019-07-10 11:30:45,077 - twisted - 253 - ERROR - - "main", mod_spec)
2019-07-10 11:30:45,077 - twisted - 253 - ERROR - - File "/usr/lib/python3.5/runpy.py", line 85, in _run_code
2019-07-10 11:30:45,078 - twisted - 253 - ERROR - - exec(code, run_globals)
2019-07-10 11:30:45,078 - twisted - 253 - ERROR - - File "/opt/venvs/matrix-synapse/lib/python3.5/site-packages/synapse/app/homeserver.py", line 658, in
2019-07-10 11:30:45,079 - twisted - 253 - ERROR - - main()
2019-07-10 11:30:45,079 - twisted - 253 - ERROR - - File "/opt/venvs/matrix-synapse/lib/python3.5/site-packages/synapse/app/homeserver.py", line 653, in main
2019-07-10 11:30:45,079 - twisted - 253 - ERROR - - hs = setup(sys.argv[1:])
2019-07-10 11:30:45,080 - twisted - 253 - ERROR - - File "/opt/venvs/matrix-synapse/lib/python3.5/site-packages/synapse/app/homeserver.py", line 349, in setup
2019-07-10 11:30:45,080 - twisted - 253 - ERROR - - database_engine = create_engine(config.database_config)
2019-07-10 11:30:45,080 - twisted - 253 - ERROR - - File "/opt/venvs/matrix-synapse/lib/python3.5/site-packages/synapse/storage/engines/init.py", line 34, in create_engine
2019-07-10 11:30:45,081 - twisted - 253 - ERROR - - module = importlib.import_module(name)
2019-07-10 11:30:45,081 - twisted - 253 - ERROR - - File "/usr/lib/python3.5/importlib/init.py", line 126, in import_module
2019-07-10 11:30:45,081 - twisted - 253 - ERROR - - return _bootstrap._gcd_import(name[level:], package, level)
2019-07-10 11:30:45,082 - twisted - 253 - ERROR - - File "", line 986, in _gcd_import
2019-07-10 11:30:45,082 - twisted - 253 - ERROR - - File "", line 969, in _find_and_load
2019-07-10 11:30:45,082 - twisted - 253 - ERROR - - File "", line 958, in _find_and_load_unlocked
2019-07-10 11:30:45,083 - twisted - 253 - ERROR - - File "", line 673, in _load_unlocked
2019-07-10 11:30:45,083 - twisted - 253 - ERROR - - File "", line 673, in exec_module
2019-07-10 11:30:45,083 - twisted - 253 - ERROR - - File "", line 222, in _call_with_frames_removed
2019-07-10 11:30:45,084 - twisted - 253 - ERROR - - File "/opt/venvs/matrix-synapse/lib/python3.5/site-packages/psycopg2/init.py", line 50, in
2019-07-10 11:30:45,084 - twisted - 253 - ERROR - - from psycopg2._psycopg import ( # noqa
2019-07-10 11:30:45,084 - twisted - 253 - ERROR - - ImportError: libpq.so.5: cannot open shared object file: No such file or directory