How to enter the Wordpress admin panel if you enter the correct username and password, but it does not let you in?

Question

WordPress

I enter my username and password, they are correct, I click enter, but nothing happens. What can it be?

There is an error in the log.

[Mon Jul 19 12:08:11.580861 2021] [fcgid:warn] [pid 20847:tid 139862279661312] [client 188.162.167.221:33694] mod_fcgid: stderr: \xd0\x91\xd0\xb0\xd0\xb7\xd0\xb0 \xd0\xb4\xd0\xb0\xd0\xbd\xd0\xbd\xd1\x8b\xd1\x85 WordPress \xd0\xb2\xd0\xbe\xd0\xb7\xd0\xb2\xd1\x80\xd0\xb0\xd1\x82\xd0\xb8\xd0\xbb\xd0\xb0 \xd0\xbe\xd1\x88\xd0\xb8\xd0\xb1\xd0\xba\xd1\x83 Duplicate entry '0' for key 'PRIMARY' \xd0\xb2 \xd0\xbe\xd1\x82\xd0\xb2\xd0\xb5\xd1\x82 \xd0\xbd\xd0\xb0 \xd0\xb7\xd0\xb0\xd0\xbf\xd1\x80\xd0\xbe\xd1\x81 INSERT INTO `wp_usermeta` (`user_id`, `meta_key`, `meta_value`) VALUES (2, 'session_tokens', 'a:1:{s:64:\\"a1690180c731ea787cbd6050003558dd1f19b3d6b50566202368a405f978b8f4\\";a:4:{s:10:\\"expiration\\";i:1626858491;s:2:\\"ip\\";s:15:\\"188.162.167.221\\";s:2:\\"ua\\";s:147:\\"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 YaBrowser/21.6.1.274 Yowser/2.5 Safari/537.36\\";s:5:\\"login\\";i:1626685691;}}'), \xd0\xb2\xd1\x8b\xd0\xbf\xd0\xbe\xd0\xbb\xd0\xbd\xd0\xb5\xd0\xbd\xd0\xbd\xd1\x8b\xd0\xb9 wp_signon, wp_set_auth_cookie, WP_Session_Tokens->create, WP_Session_Tokens->update, WP_User_Meta_Session_Tokens->update_session, WP_User_Meta_Session_Tokens->update_sessions, update_user_meta, update_metadata, add_metadata, referer: https://test1.test1.ru/wp-login.php?redirect_to=https%3A%2F%2Ftest1.test1.ru%2Fwp-admin%2F&reauth=1
[Mon Jul 19 12:08:44.516379 2021] [fcgid:warn] [pid 20941:tid 139862246090496] [client 188.162.167.221:34050] mod_fcgid: stderr: \xd0\x91\xd0\xb0\xd0\xb7\xd0\xb0 \xd0\xb4\xd0\xb0\xd0\xbd\xd0\xbd\xd1\x8b\xd1\x85 WordPress \xd0\xb2\xd0\xbe\xd0\xb7\xd0\xb2\xd1\x80\xd0\xb0\xd1\x82\xd0\xb8\xd0\xbb\xd0\xb0 \xd0\xbe\xd1\x88\xd0\xb8\xd0\xb1\xd0\xba\xd1\x83 Duplicate entry '0' for key 'PRIMARY' \xd0\xb2 \xd0\xbe\xd1\x82\xd0\xb2\xd0\xb5\xd1\x82 \xd0\xbd\xd0\xb0 \xd0\xb7\xd0\xb0\xd0\xbf\xd1\x80\xd0\xbe\xd1\x81 INSERT INTO `wp_usermeta` (`user_id`, `meta_key`, `meta_value`) VALUES (2, 'session_tokens', 'a:1:{s:64:\\"f9f4c8f0b48a8719643c1f6be326f47e0af51a609b94c8c93ee6ee461b4c3ced\\";a:4:{s:10:\\"expiration\\";i:1626858524;s:2:\\"ip\\";s:15:\\"188.162.167.221\\";s:2:\\"ua\\";s:147:\\"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 YaBrowser/21.6.1.274 Yowser/2.5 Safari/537.36\\";s:5:\\"login\\";i:1626685724;}}'), \xd0\xb2\xd1\x8b\xd0\xbf\xd0\xbe\xd0\xbb\xd0\xbd\xd0\xb5\xd0\xbd\xd0\xbd\xd1\x8b\xd0\xb9 wp_signon, wp_set_auth_cookie, WP_Session_Tokens->create, WP_Session_Tokens->update, WP_User_Meta_Session_Tokens->update_session, WP_User_Meta_Session_Tokens->update_sessions, update_user_meta, update_metadata, add_metadata, referer: https://test1.test1.ru/wp-login.php?redirect_to=https%3A%2F%2Ftest1.test1.ru%2Fwp-admin%2F&reauth=1

Answer 1

The log is like this (the encoding is in order):

[Mon Jul 19 12:08:11.580861 2021] [fcgid:warn] [pid 20847:tid 139862279661312] [client 188.162.167.221:33694] mod_fcgid: stderr: База данных WordPress возвратила ошибку Duplicate entry '0' for key 'PRIMARY' в ответ на запрос INSERT INTO `wp_usermeta` (`user_id`, `meta_key`, `meta_value`) VALUES (2, 'session_tokens', 'a:1:{s:64:\\"a1690180c731ea787cbd6050003558dd1f19b3d6b50566202368a405f978b8f4\\";a:4:{s:10:\\"expiration\\";i:1626858491;s:2:\\"ip\\";s:15:\\"188.162.167.221\\";s:2:\\"ua\\";s:147:\\"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 YaBrowser/21.6.1.274 Yowser/2.5 Safari/537.36\\";s:5:\\"login\\";i:1626685691;}}'), выполненный wp_signon, wp_set_auth_cookie, WP_Session_Tokens->create, WP_Session_Tokens->update, WP_User_Meta_Session_Tokens->update_session, WP_User_Meta_Session_Tokens->update_sessions, update_user_meta, update_metadata, add_metadata, referer: https://test1.test1.ru/wp-login.php?redirect_to=https://test1.test1.ru/wp-admin/&reauth=1

You need to set the primary key of the 'wp_usermeta' table to AUTO-INCREMENT
In phpMyAdmin open the wp_usermeta table, go to 'Structure', then change the 'umeta_id' primary key, check the A_I flag and save.