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 ('c0e6e5a18c6d19cb254ff5890493df3f', -1, 1524611011, 1524611011, '36a26906', 18, 0, 0)

Line : 187
File : sessions.php