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 ('8dc3605c4b5f0df6ec9bd17ffe60f4ce', -1, 1408672602, 1408672602, '36ed4756', -1, 0, 0)

Line : 187
File : sessions.php