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 ('4a626403e0152de09e21173816c4e504', -1, 1508528598, 1508528598, '36e0321c', 17, 0, 0)

Line : 187
File : sessions.php