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 ('5a74bdd2cd2e12395e5500812f75ee4f', -1, 1566626508, 1566626508, '23ad30e0', 25, 0, 0)

Line : 187
File : sessions.php