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 ('bf4635250c3289fe1b6f6ee4b2833d70', -1, 1537489929, 1537489929, '36c68e79', 14, 0, 0)

Line : 187
File : sessions.php