phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1142 INSERT command denied to user 'alex_m_user'@'home.onego.ru' for table 'phpbb_sessions'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('3af179fb1654f1c8ac769c4bd716b856', -1, 1582700611, 1582700611, '22e2f446', -4, 0, 0)

Line : 187
File : sessions.php