Hi @Vitaliy, there are some, but i think - not relevant for the problem:
[Thu May 28 17:23:01.143782 2020] [php7:error] [pid 14216:tid 1888] [client ::1:57371] PHP Fatal error: Uncaught → Smarty: unable to write file C:\xampp\htdocs\ojs32\cache\t_compile\bf55cdacf2ffe85d44012b49527ff3bfcc912179^4f065f79ce9f12ef974cd073de14c3fdb7589018_0.app.linkActionlinkActionOptio.php ← \n thrown in C:\xampp\htdocs\ojs32\lib\pkp\lib\vendor\smarty\smarty\libs\sysplugins\smarty_internal_runtime_writefile.php on line 90, referer: http://localhost/ojs32/index.php/index/admin/contexts
[Thu May 28 17:24:07.900851 2020] [core:error] [pid 14216:tid 1868] (20025)The given path contained wildcard characters: [client ::1:57424] AH00036: access to //api/v1/contexts failed (filesystem path 'C:/xampp/htdocs/’), referer: http://localhost/ojs32/index.php/index/admin/contexts
[Thu May 28 17:25:04.148253 2020] [php7:warn] [pid 14216:tid 1868] [client ::1:57424] PHP Warning: mkdir(): File exists in C:\xampp\htdocs\ojs32\lib\pkp\classes\file\FileManager.inc.php on line 311, referer: http://localhost/ojs32/index.php/index/admin/contexts
[Thu May 28 17:25:04.175103 2020] [php7:warn] [pid 14216:tid 1868] [client ::1:57424] PHP Warning: mkdir(): File exists in C:\xampp\htdocs\ojs32\lib\pkp\classes\file\FileManager.inc.php on line 311, referer: http://localhost/ojs32/index.php/index/admin/contexts
[Thu May 28 17:25:04.201713 2020] [php7:warn] [pid 14216:tid 1868] [client ::1:57424] PHP Warning: mkdir(): File exists in C:\xampp\htdocs\ojs32\lib\pkp\classes\file\FileManager.inc.php on line 311, referer: http://localhost/ojs32/index.php/index/admin/contexts
[Thu May 28 17:37:20.218363 2020] [php7:error] [pid 14216:tid 1904] [client ::1:57548] PHP Fatal error: Uncaught Exception: DB Error: Duplicate entry ‘xxx’ for key ‘users_username’ Query: INSERT INTO users\n\t\t\t\t(username, password, email, url, phone, mailing_address, billing_address, country, locales, date_last_email, date_registered, date_validated, date_last_login, must_change_password, disabled, disabled_reason, auth_id, auth_str, inline_help, gossip)\n\t\t\t\tVALUES\n\t\t\t\t(?, ?, ?, ?, ?, ?, ?, ?, ?, null, ‘2020-05-28 17:37:19’, null, ‘2020-05-28 17:37:19’, ?, ?, ?, ?, ?, ?, ?) in C:\xampp\htdocs\ojs32\lib\pkp\classes\db\DAO.inc.php:703\nStack trace:\n#0 C:\xampp\htdocs\ojs32\lib\pkp\classes\db\DAO.inc.php(231): DAO->handleError(Object(ADODB_mysqli), ‘INSERT INTO use…’)\n#1 C:\xampp\htdocs\ojs32\lib\pkp\classes\user\UserDAO.inc.php(348): DAO->update(‘INSERT INTO use…’, Array)\n#2 C:\xampp\htdocs\ojs32\lib\pkp\classes\install\PKPInstall.inc.php(252): UserDAO->insertObject(Object(User))\n#3 C:\xampp\htdocs\ojs32\lib\pkp\classes\install\Installer.inc.php(417): PKPInstall->createData(Object(Install), Array)\n#4 C in C:\xampp\htdocs\ojs32\lib\pkp\classes\db\DAO.inc.php on line 703, referer: http://localhost/ojs32/index.php/index/install
[Thu May 28 18:14:19.274407 2020] [core:error] [pid 14216:tid 1888] (20025)The given path contained wildcard characters: [client ::1:57980] AH00036: access to //api/v1/contexts failed (filesystem path 'C:/xampp/htdocs/’), referer: http://localhost/ojs32/index.php/index/admin/contexts
[Thu May 28 18:29:57.568922 2020] [core:error] [pid 14216:tid 1888] (20025)The given path contained wildcard characters: [client ::1:58122] AH00036: access to //api/v1/contexts failed (filesystem path 'C:/xampp/htdocs/’), referer: http://localhost/ojs32/index.php/index/admin/contexts
[Thu May 28 18:32:24.817702 2020] [core:error] [pid 14216:tid 1904] (20025)The given path contained wildcard characters: [client ::1:58248] AH00036: access to //api/v1/contexts failed (filesystem path 'C:/xampp/htdocs/’), referer: http://localhost/ojs32/index.php/index/admin/contexts
[Thu May 28 18:41:30.449986 2020] [core:error] [pid 14216:tid 1904] (20025)The given path contained wildcard characters: [client ::1:58381] AH00036: access to //api/v1/contexts failed (filesystem path 'C:/xampp/htdocs/’), referer: http://localhost/ojs32/index.php/index/admin/contexts
[Thu May 28 18:41:58.686370 2020] [core:error] [pid 14216:tid 1904] (20025)The given path contained wildcard characters: [client ::1:58384] AH00036: access to //api/v1/contexts failed (filesystem path 'C:/xampp/htdocs/’), referer: http://localhost/ojs32/index.php/index/admin/contexts
[Thu May 28 19:23:09.424391 2020] [core:error] [pid 14216:tid 1904] (20025)The given path contained wildcard characters: [client ::1:58637] AH00036: access to //api/v1/contexts failed (filesystem path 'C:/xampp/htdocs/’), referer: http://localhost/ojs32/index.php/index/admin/contexts