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 ('0f091cb4cbd20c8c8af55174fc8ccc94', -1, 1524455895, 1524455895, '6b1630f3', 4, 0, 0)

Line : 187
File : sessions.php