Internal Server Error when first install

I try to run the latest version(12.0.4) on my vps for the first time, the system is CentOS6.5,LNMP
when I visit the host, and create admin ,click finish
I got this internal server error:
Internal Server Error

The server encountered an internal error and was unable to complete your request.
Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.
More details can be found in the server log.

Technical details

Remote Address:
Request ID: 2qrxNDGPBFpgZ0Y61k7w

The service log as follow:

{“reqId”:“SlwVpDWVR73hkVSKbYvk”,“level”:3,“time”:“2018-01-01T08:53:23+00:00”,“remoteAddr”:“”,“user”:"–",“app”:“index”,“method”:“POST”,“url”:"/index.php",“message”:“Exception: {“Exception”:“Doctrine\\DBAL\\Exception\\DriverException”,“Message”:“An exception occurred while executing ‘CREATE TABLE oc_addressbooks (id BIGINT UNSIGNED AUTO_INCREMENT NOT NULL, principaluri VARCHAR(255) DEFAULT NULL, displayname VARCHAR(255) DEFAULT NULL, uri VARCHAR(255) DEFAULT NULL, description VARCHAR(255) DEFAULT NULL, synctoken INT UNSIGNED DEFAULT 1 NOT NULL, UNIQUE INDEX addressbook_index (principaluri, uri), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8 COLLATE utf8_bin ENGINE = InnoDB’:\n\nSQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytes”,“Code”:0,“Trace”:”#0 \/usr\/local\/nginx\/html\/nextcloud\/3rdparty\/doctrine\/dbal\/lib\/Doctrine\/DBAL\/DBALException.php(128): Doctrine\\DBAL\\Driver\\AbstractMySQLDriver->convertException(‘An exception oc…’, Object(Doctrine\\DBAL\\Driver\\PDOException))\n#1 \/usr\/local\/nginx\/html\/nextcloud\/3rdparty\/doctrine\/dbal\/lib\/Doctrine\/DBAL\/Connection.php(964): Doctrine\\DBAL\\DBALException::driverExceptionDuringQuery(Object(Doctrine\\DBAL\\Driver\\PDOMySql\\Driver), Object(Doctrine\\DBAL\\Driver\\PDOException), ‘CREATE TABLE o...')\\n#2 \\\/usr\\\/local\\\/nginx\\\/html\\\/nextcloud\\\/lib\\\/private\\\/DB\\\/MDB2SchemaManager.php(162): Doctrine\\\\DBAL\\\\Connection->query('CREATE TABLEo…’)\n#3 \/usr\/local\/nginx\/html\/nextcloud\/lib\/private\/DB\/MDB2SchemaManager.php(72): OC\\DB\\MDB2SchemaManager->executeSchemaChange(Object(Doctrine\\DBAL\\Schema\\S

What can I do now?

r u resolve this issue if yes pls let me know how to resolve.

I also have the same problem - if I install with SQLite, it works fine - if I try to use MySQL it fails with the same error as yours.