Followed install instructions, server returns
# Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at [no address given] to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.
There are no apache errors. In nextcloud.log, errors like these are appearing:
{"reqId":"WzrWw8JNJdJDzqEt5o8HSAAAAAA","level":3,"time":"2018-07-03T01:52:04+00:00","remoteAddr":"2605:6000:1020:24d::5","user":"--","app":"core",
"method":"GET","url":"\/nextcloud\/","message":"Exception: {\"Exception\":\"Doctrine\\\\DBAL\\\\Exception\\\\TableNotFoundException\",\"Message\":
\"An exception occurred while executing 'SELECT * FROM \\\"oc_appconfig\\\"':\\n\\nSQLSTATE[42P01]: Undefined table: 7 ERROR: relation \\\"oc_app
config\\\" does not exist\\nLINE 1: SELECT * FROM \\\"oc_appconfig\\\"\\n ^\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/gen
tooserver\\\/htdocs\\\/nextcloud\\\/3rdparty\\\/doctrine\\\/dbal\\\/lib\\\/Doctrine\\\/DBAL\\\/DBALException.php(128): Doctrine\\\\DBAL\\\\Driver\
\\\AbstractPostgreSQLDriver->convertException('An exception oc...', Object(Doctrine\\\\DBAL\\\\Driver\\\\PDOException))\\n#1 \\\/var\\\/www\\\/gen
tooserver\\\/htdocs\\\/nextcloud\\\/3rdparty\\\/doctrine\\\/dbal\\\/lib\\\/Doctrine\\\/DBAL\\\/Connection.php(855): Doctrine\\\\DBAL\\\\DBALExcept
ion::driverExceptionDuringQuery(Object(Doctrine\\\\DBAL\\\\Driver\\\\PDOPgSql\\\\Driver), Object(Doctrine\\\\DBAL\\\\Driver\\\\PDOException), 'SEL
ECT * FROM \\\"...', Array)\\n#2 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/lib\\\/private\\\/DB\\\/Connection.php(195): Doctrine\\\
\DBAL\\\\Connection->executeQuery('SELECT * FROM \\\"...', Array, Array, NULL)\\n#3 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/3rdpa
rty\\\/doctrine\\\/dbal\\\/lib\\\/Doctrine\\\/DBAL\\\/Query\\\/QueryBuilder.php(206): OC\\\\DB\\\\Connection->executeQuery('SELECT * FROM \\\"...'
, Array, Array)\\n#4 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/lib\\\/private\\\/DB\\\/QueryBuilder\\\/QueryBuilder.php(214): Doctr
ine\\\\DBAL\\\\Query\\\\QueryBuilder->execute()\\n#5 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/lib\\\/private\\\/AppConfig.php(320)
: OC\\\\DB\\\\QueryBuilder\\\\QueryBuilder->execute()\\n#6 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/lib\\\/private\\\/AppConfig.ph
p(94): OC\\\\AppConfig->loadConfigValues()\\n#7 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/lib\\\/private\\\/AppConfig.php(277): OC\
\\\AppConfig->getApps()\\n#8 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/lib\\\/private\\\/legacy\\\/app.php(964): OC\\\\AppConfig->g
etValues(false, 'installed_versi...')\\n#9 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/lib\\\/private\\\/TemplateLayout.php(137): OC_
App::getAppVersions()\\n#10 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/lib\\\/private\\\/legacy\\\/template.php(207): OC\\\\Template
Layout->__construct('error', '')\\n#11 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/lib\\\/private\\\/Template\\\/Base.php(132): OC_Te
mplate->fetchPage()\\n#12 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/lib\\\/private\\\/legacy\\\/template.php(351): OC\\\\Template\\
\\Base->printPage()\\n#13 \\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/index.php(65): OC_Template::printExceptionErrorPage(Object(Doct
rine\\\\DBAL\\\\Exception\\\\TableNotFoundException))\\n#14 {main}\",\"File\":\"\\\/var\\\/www\\\/gentooserver\\\/htdocs\\\/nextcloud\\\/3rdparty\
\\/doctrine\\\/dbal\\\/lib\\\/Doctrine\\\/DBAL\\\/Driver\\\/AbstractPostgreSQLDriver.php\",\"Line\":76}","userAgent":"Mozilla\/5.0 (X11; Linux x86
_64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/67.0.3396.87 Safari\/537.36","version":"13.0.2.1"}