whats the errormessage? /bin/chmod +x path-to/smsExport /bin is not in PATH as standard, may be your issue
./smsExport "GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 2 matched rules; type="method_call", sender=":1.163" (uid=29999 pid=4928 comm="./smsExport ") interface="org.freedesktop.Tracker1.Steroids" member="Query" error name="(unset)" requested_reply=0 destination="org.freedesktop.Tracker1" (uid=29999 pid=1324 comm="/usr/lib/tracker/tracker-store "))" # sms: 0 QTrackerDirectSelectResult: QSparqlError(9, "GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 2 matched rules; type="method_call", sender=":1.163" (uid=29999 pid=4928 comm="./smsExport ") interface="org.freedesktop.Tracker1.Steroids" member="Query" error name="(unset)" requested_reply=0 destination="org.freedesktop.Tracker1" (uid=29999 pid=1324 comm="/usr/lib/tracker/tracker-store "))", 4) "SELECT ?message nie:plainTextContent(?message) rdf:type(?message) nmo:communicationChannel(?message) nmo:sentDate(?message) nmo:messageId(?message) nmo:receivedDate(?message) nie:contentLastModified(?message) nmo:isSent(?message) nmo:isDraft(?message) nmo:isRead(?message) nmo:encoding(?message) nie:characterSet(?message) nie:language(?message) (SELECT GROUP_CONCAT(tracker:coalesce(nco:imID(?medium), nco:phoneNumber(?medium), ?medium), "\u001e") WHERE { ?from nco:hasContactMedium ?medium . }) (SELECT GROUP_CONCAT(tracker:coalesce(nco:imID(?medium), nco:phoneNumber(?medium), ?medium), "\u001e") WHERE { ?to nco:hasContactMedium ?medium . }) nmo:phoneMessageId(?message) WHERE { SELECT ?message ?from ?to IF (nmo:isSent(?message) = true, ?to, ?from) AS ?target ?message WHERE {?message nmo:from ?from ; nmo:to ?to . ?message rdf:type nmo:SMSMessage . } }"