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 ('5db11e713e8c1e3e748f2a0f9ff63604', -1, 1547890311, 1547890311, '36e23ab1', 58, 0, 0)

Line : 187
File : sessions.php