src/core/qgsmessagelog.cpp: 29: (logMessage) [24ms] [thread:0x55f2b1f1e8a0] 2018-10-30T15:31:12 Qt[1] QSqlDatabasePrivate::database: requested database does not belong to the calling thread.
src/core/auth/qgsauthmanager.cpp: 143: (authDatabaseConnection) [0ms] [thread:0x55f2b1f1e8a0] Opening of authentication db FAILED
Warning: QSqlQuery::prepare: database not open
Stacktrace (piped through c++filt):
ERROR: Opening of authentication db FAILED
./output/bin/qgis(+0xd500)[0x55f2aeffa500]
./output/bin/qgis(+0xda2b)[0x55f2aeffaa2b]
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5(+0xaee28)[0x7fe4dca23e28]
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5(+0xaf0c8)[0x7fe4dca240c8]
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5(QMessageLogger::warning(char const*, ...) const+0xaf)[0x7fe4dc9f617f]
/usr/lib/x86_64-linux-gnu/libQt5Sql.so.5(+0x11c4f)[0x7fe4d9903c4f]
/home/webmaster/dev/cpp/bm-qt5/output/lib/libqgis_core.so.3.5.0(QgsAuthManager::sslCertCustomConfigByHost(QString const&)+0x1a0)[0x7fe4de2c2caa]
/home/webmaster/dev/cpp/bm-qt5/output/lib/libqgis_core.so.3.5.0(QgsNetworkAccessManager::createRequest(QNetworkAccessManager::Operation, QNetworkRequest const&, QIODevice*)+0x608)[0x7fe4de5b23ca]
/usr/lib/x86_64-linux-gnu/libQt5Network.so.5(QNetworkAccessManager::get(QNetworkRequest const&)+0x15)[0x7fe4d586cbb5]