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 ('5c3f28bf9380d741181b4a8b2f5c8c9f', -1, 1537683570, 1537683570, '369e34a6', -2, 0, 0)

Line : 187
File : sessions.php