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 ('b4f391e4767aab32ddfcfb4840cb3150', -1, 1524344345, 1524344345, '36e06486', -4, 0, 0)

Line : 211
File : sessions.php