Error starting nextcloud

[chrismou]

Getting the following error trying to start the Nextcloud client:

nextcloud: symbol lookup error: nextcloud: undefined symbol: _ZN3OCC18AbstractNetworkJob10davRequestERK10QByteArrayRK4QUrl15QNetworkRequestP9QIODevice

On Ubuntu Zesty. Client installed using the Launchpad PPA. I was previously using the OwnCloud client, so not sure if that's caused a package mismatch somewhere.

Any ideas?

[ivaradi]

Which version of the ownCloud client were you using previously?

Could you execute the following commands and provide their output:

which nextcloud
ldd `which nextcloud`

[viggy96]

I've got a similar error.
nextcloud: symbol lookup error: nextcloud: undefined symbol: _ZN3OCC6Logger21setLogWindowActivatedEb
/usr/bin/nextcloud

Output of ldd:

	linux-vdso.so.1 (0x00007ffe04965000)
	libQt5DBus.so.5 => /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 (0x00007f5bac899000)
	libQt5WebKitWidgets.so.5 => /usr/lib/x86_64-linux-gnu/libQt5WebKitWidgets.so.5 (0x00007f5bac653000)
	libQt5WebKit.so.5 => /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 (0x00007f5ba96db000)
	libQt5Xml.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Xml.so.5 (0x00007f5ba949f000)
	libnextcloudsync.so.0 => /usr/local/lib/x86_64-linux-gnu/libnextcloudsync.so.0 (0x00007f5ba90f4000)
	libQt5Widgets.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 (0x00007f5ba88ad000)
	libQt5Gui.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 (0x00007f5ba8144000)
	libQt5Network.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Network.so.5 (0x00007f5ba7db8000)
	libQt5Core.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007f5ba766d000)
	libqt5keychain.so.1 => /usr/lib/x86_64-linux-gnu/libqt5keychain.so.1 (0x00007f5ba744d000)
	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f5ba70bf000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f5ba6d21000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f5ba6b09000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f5ba6718000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f5bacf71000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f5ba64f9000)
	libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f5ba62ac000)
	libQt5PrintSupport.so.5 => /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5 (0x00007f5ba603d000)
	libQt5Quick.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 (0x00007f5ba59f4000)
	libQt5WebChannel.so.5 => /usr/lib/x86_64-linux-gnu/libQt5WebChannel.so.5 (0x00007f5ba57d6000)
	libicuuc.so.60 => /usr/lib/x86_64-linux-gnu/libicuuc.so.60 (0x00007f5ba541f000)
	libQt5Positioning.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Positioning.so.5 (0x00007f5ba51c1000)
	libicui18n.so.60 => /usr/lib/x86_64-linux-gnu/libicui18n.so.60 (0x00007f5ba4d20000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f5ba4b1c000)
	libQt5Sensors.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Sensors.so.5 (0x00007f5ba48db000)
	libwoff2dec.so.1.0.2 => /usr/lib/x86_64-linux-gnu/libwoff2dec.so.1.0.2 (0x00007f5ba46d0000)
	libjpeg.so.8 => /usr/lib/x86_64-linux-gnu/libjpeg.so.8 (0x00007f5ba4468000)
	libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f5ba4236000)
	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f5ba4019000)
	libwebp.so.6 => /usr/lib/x86_64-linux-gnu/libwebp.so.6 (0x00007f5ba3db0000)
	libhyphen.so.0 => /usr/lib/x86_64-linux-gnu/libhyphen.so.0 (0x00007f5ba3baa000)
	libxml2.so.2 => /usr/lib/x86_64-linux-gnu/libxml2.so.2 (0x00007f5ba37e9000)
	libxslt.so.1 => /usr/lib/x86_64-linux-gnu/libxslt.so.1 (0x00007f5ba35ac000)
	libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 (0x00007f5ba32a3000)
	libgio-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 (0x00007f5ba2f05000)
	libgstapp-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstapp-1.0.so.0 (0x00007f5ba2cf6000)
	libgstbase-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0 (0x00007f5ba2a82000)
	libgstreamer-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0 (0x00007f5ba2748000)
	libgstpbutils-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstpbutils-1.0.so.0 (0x00007f5ba2510000)
	libgstaudio-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0 (0x00007f5ba229c000)
	libgsttag-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgsttag-1.0.so.0 (0x00007f5ba2061000)
	libgstvideo-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0 (0x00007f5ba1dc9000)
	libgstfft-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstfft-1.0.so.0 (0x00007f5ba1bbe000)
	libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007f5ba196a000)
	libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f5ba1654000)
	libQt5Qml.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 (0x00007f5ba1057000)
	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f5ba0e4f000)
	libocsync.so.0 => /usr/lib/tls/libocsync.so.0 (0x00007f5ba0c3b000)
	libcrypto.so.1.0.0 => /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0 (0x00007f5ba07f8000)
	libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007f5ba056c000)
	libharfbuzz.so.0 => /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007f5ba02ce000)
	libdouble-conversion.so.1 => /usr/lib/x86_64-linux-gnu/libdouble-conversion.so.1 (0x00007f5ba00bd000)
	libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f5b9fe39000)
	libicudata.so.60 => /usr/lib/x86_64-linux-gnu/libicudata.so.60 (0x00007f5b9e290000)
	libwoff2common.so.1.0.2 => /usr/lib/x86_64-linux-gnu/libwoff2common.so.1.0.2 (0x00007f5b9e08d000)
	libbrotlidec.so.1 => /usr/lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x00007f5b9de81000)
	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f5b9dc5b000)
	libgmodule-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0 (0x00007f5b9da57000)
	libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007f5b9d82f000)
	libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f5b9d614000)
	libmount.so.1 => /lib/x86_64-linux-gnu/libmount.so.1 (0x00007f5b9d3c0000)
	liborc-0.4.so.0 => /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0 (0x00007f5b9d144000)
	libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 (0x00007f5b9cf3c000)
	libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f5b9ccca000)
	libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f5b9ca99000)
	libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f5b9c7e3000)
	libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f5b9c52f000)
	libgraphite2.so.3 => /usr/lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007f5b9c302000)
	liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f5b9c0e6000)
	libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f5b9bdcb000)
	libbrotlicommon.so.1 => /usr/lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x00007f5b9bbab000)
	libblkid.so.1 => /lib/x86_64-linux-gnu/libblkid.so.1 (0x00007f5b9b95e000)
	libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f5b9b625000)
	libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f5b9b410000)
	libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f5b9b209000)
	libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f5b9afe1000)
	libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f5b9addd000)
	libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f5b9abd7000)
	libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f5b9a9c2000)

[ivaradi]

The problem is most likely this:

libnextcloudsync.so.0 => /usr/local/lib/x86_64-linux-gnu/libnextcloudsync.so.0

This library should be /usr/lib/x86_64-linux-gnu/libnextcloudsync.so.0.

The /usr/local/lib/x86_64-linux-gnu directory is before /usr/lib/x86_64-linux-gnu in the shared library search path on Ubuntu, so probably the best solution is to remove the wrong library file or the package containing it, if any.

[viggy96]

@ivaradi Thanks, deleting /usr/local/lib/x86_64-linux-gnu/libnextcloudsync.so.0 worked and now the Nextcloud client is working.