no popup when clicking export video

[ti-vo]

error description:
when clicking on "export video", there is no popup (nothing happens)

Reproduce:

1. open a project
2. click on the red button

expected behaviour:
Pop-up window so specify where to save exported video

system details:

• OpenShot Version: 2.5.1-dev2
• libopenshot Version: 0.2.5-dev2
• Platform: Linux-4.19.0-8-amd64-x86_64-with-debian-10.3
• Processor:
• Machine: x86_64
• Python version: 3.4.3
• Qt5 version: 5.2.1
• PyQt5 version: 5.2.1
• Qt Detected Languages: ['de-DE']
• LANG Environment Variable: de_DE.UTF-8
• LOCALE Environment Variable:
• Daily Build Installed: http://github.com/OpenShot/openshot-qt/releases/download/OpenShot-v2.5.1-dev2-1589067618-6e7ad231-a62505ca-x86.exe

log files

• http://logs.openshot.org/xyylbb7q8yeyn1smto0pu2ih84dur9hb/openshot-qt.zip
• http://logs.openshot.org/xyylbb7q8yeyn1smto0pu2ih84dur9hb/libopenshot.zip

Ausnahme / Stapelverfolgung
No stacktrace found in log files

[SuslikV]

This is only daily build issue. More info is here: #3471 (comment)

[ferdnyc]

If using the latest builds, agreed. Fixed in #3480.