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 ('18549f4beb75a6e7b09ce1cb66e55db5', -1, 1555843865, 1555843865, '12e893d7', 38, 0, 0)

Line : 187
File : sessions.php