Call for help! Phpmyadmin can't get in! (ubuntu)

am I in the middle of installing phpmyadmin and mariadb
installation in ubuntu and suddenly I can"t log in?

phpmyadmin/index.php?token=38c2c8ddaee6d0bcf68dd2edac0b039b
although he showed token
, but he went back to the original login window and couldn"t get in all the time.
what kind of problem is this? Apache is still normal.
the number of databases is still available. How could this happen without often
?
clipboard.png

PS enter the wrong password report:-sharp1045-Access denied for user "root"@"localhost" (using password: YES)

is it impossible to log in?

the last error of
is

.

Wed Oct 31 15 client 29 PHP Warning: Unknown: write failed: No space left on device (10.851569 2018] [: error] [pid 32227] [client 172.68.65.177 client 34776] PHP Warning: Unknown: write failed: No space left on device (28 1588 2018
[: error] [pid 32227] [client 172.68.65.177 pid 34776] PHP Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/ var/lib/php/sessions) in Unknown on line 0
[Wed Oct 31 15 br 29 br 10.851752 2018] [log_config:warn] [pid 32227] (28) No space left on device: [client 172.68.65.177VR 34776] AH00646: Error writing to / var/log/apache2/access.log

Phpmyadmin mysql php ubuntu ubuntu16.04
Oct.05,2021

if it is a sudden problem (which was normal before), then at least it means that there should not be too big a problem with the setting. According to my past experience, it is suspected that something in the business may have exhausted the system resources (for example, the disk is full due to heavy occupation, or there is not enough memory, etc.). The most practical advice is that you can try to restart without affecting your business. ?

password error can check the config.inc.php file in the PHPadmin root directory
find this field and delete the password
$cfg ['Servers'] [$I] [' user'] = 'root';
$cfg [' Servers'] [$I] ['password'] =' root';

session.save_path. Is there any abnormality in the path set by this parameter?

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e9b5c5-47607.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e9b5c5-47607.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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