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 ('e1b4b50a4db53dcd1b6b8f67fc7511de', -1, 1527294541, 1527294541, '36e05b3a', 17, 0, 0)

Line : 187
File : sessions.php