phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6e21cd79fa0acce88f562e446e1c99e3', -1, 1566671505, 1566671505, '22eec2a6', 55, 0, 0)

Line : 187
File : sessions.php