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 ('9685acc2d9ecfc2d3ce7d37ec3dc9d8c', -1, 1766768480, 1766768480, 'd849d880', 25, 0, 0)

Line : 189
File : sessions.php