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 ('b3d19a56ea96c7cdce29127db1a9b81b', -1, 1527435781, 1527435781, '369f5efd', 15, 0, 0)

Line : 187
File : sessions.php