Lingua PT-BR does not work

Gtk-Message: Failed to load module "canberra-gtk-module"
Gtk-Message: Failed to load module "canberra-gtk-module"
Qt: Session management error: None of the authentication protocols specified are supported
DEBUG Background objects: 5 loaded
DEBUG Background objects: 5 loaded
DEBUG PluginManager: attempting to load plugin plugin_langdetect from /usr/lib64/spivak/plugins/plugin_langdetect.so
ERROR PluginManager: failed to load plugin plugin_langdetect from /usr/lib64/spivak/plugins/plugin_langdetect.so: The shared library was not found.
DEBUG SongDatabaseScanner: procesing thread started
DEBUG SongDatabaseScanner: submitting thread started
DEBUG SongDatabaseScanner: procesing thread started
DEBUG SongDatabaseScanner: cleanup thread started
DEBUG SongDatabaseScanner: scanCollectionsThread started
DEBUG SongDatabaseScanner: collection thread will ignore the timestamps earlier than 2018-52-28 18:52:43
DEBUG SongDatabaseScanner: cleanup thread finished
DEBUG SongDatabaseScanner: scanCollectionsThread finished
DEBUG SongDatabaseScanner: procesing thread finished
DEBUG SongDatabaseScanner: last procesing thread finished, signaling the submitter to shut down
DEBUG SongDatabaseScanner: submitter thread finished, scan completed
DEBUG MultimediaTest: testing wav
DEBUG PluginManager: attempting to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so
ERROR PluginManager: failed to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so: The shared library was not found.
DEBUG GstMediaPlayer: pipeline state changed from NULL to READY, pending PAUSED

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed
DEBUG GstMediaPlayer: received new pad 'src_0' from 'decoder'
DEBUG GstMediaPlayer: Audio link succeeded (type 'audio/x-raw').
DEBUG GstMediaPlayer: pipeline state changed from READY to PAUSED, pending VOID_PENDING
DEBUG GstMediaPlayer: Media state set to PAUSED, sending loaded event
DEBUG MultimediaTest: testing m4a
DEBUG GstMediaPlayer: pipeline state changed from PAUSED to READY, pending NULL
DEBUG PluginManager: attempting to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so
ERROR PluginManager: failed to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so: The shared library was not found.
DEBUG GstMediaPlayer: pipeline state changed from NULL to READY, pending PAUSED

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed
DEBUG GstMediaPlayer: received new pad 'src_0' from 'decoder'
DEBUG GstMediaPlayer: Audio link succeeded (type 'audio/x-raw').
DEBUG GstMediaPlayer: pipeline state changed from READY to PAUSED, pending VOID_PENDING
DEBUG GstMediaPlayer: Media state set to PAUSED, sending loaded event
DEBUG MultimediaTest: testing mp3
DEBUG GstMediaPlayer: pipeline state changed from PAUSED to READY, pending NULL
DEBUG PluginManager: attempting to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so
ERROR PluginManager: failed to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so: The shared library was not found.
DEBUG GstMediaPlayer: pipeline state changed from NULL to READY, pending PAUSED

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed
DEBUG GstMediaPlayer: received new pad 'src_0' from 'decoder'
DEBUG GstMediaPlayer: Audio link succeeded (type 'audio/x-raw').
DEBUG GstMediaPlayer: pipeline state changed from READY to PAUSED, pending VOID_PENDING
DEBUG GstMediaPlayer: Media state set to PAUSED, sending loaded event
DEBUG MultimediaTest: testing ogg
DEBUG GstMediaPlayer: pipeline state changed from PAUSED to READY, pending NULL
DEBUG PluginManager: attempting to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so
ERROR PluginManager: failed to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so: The shared library was not found.
DEBUG GstMediaPlayer: pipeline state changed from NULL to READY, pending PAUSED

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed
ERROR GstMediaPlayer: Reported error: GStreamer error received from element vorbisdec0: No valid frames decoded before end of stream, debug info: gstaudiodecoder.c(2289): gst_audio_decoder_sink_eventfunc (): /GstPipeline:karaokepipeline/GstDecodeBin:decoder/GstVorbisDec:vorbisdec0:
no valid frames found
DEBUG MultimediaTest: error returned: GStreamer error received from element vorbisdec0: No valid frames decoded before end of stream, debug info: gstaudiodecoder.c(2289): gst_audio_decoder_sink_eventfunc (): /GstPipeline:karaokepipeline/GstDecodeBin:decoder/GstVorbisDec:vorbisdec0:
no valid frames found
DEBUG GstMediaPlayer: received new pad 'src_0' from 'decoder'
DEBUG GstMediaPlayer: Audio link succeeded (type 'audio/x-raw').
ERROR GstMediaPlayer: Reported error: GStreamer error received from element sink-actual-sink-pulse: Esse fluxo está com um formato errado., debug info: gstaudiobasesink.c(1142): gst_audio_base_sink_wait_event (): /GstPipeline:karaokepipeline/GstAutoAudioSink:sink/GstPulseSink:sink-actual-sink-pulse:
Sink not negotiated before eos event.
DEBUG MultimediaTest: error returned: GStreamer error received from element sink-actual-sink-pulse: Esse fluxo está com um formato errado., debug info: gstaudiobasesink.c(1142): gst_audio_base_sink_wait_event (): /GstPipeline:karaokepipeline/GstAutoAudioSink:sink/GstPulseSink:sink-actual-sink-pulse:
Sink not negotiated before eos event.
DEBUG MultimediaTest: testing wma
DEBUG PluginManager: attempting to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so
ERROR PluginManager: failed to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so: The shared library was not found.
DEBUG GstMediaPlayer: pipeline state changed from NULL to READY, pending PAUSED

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed
ERROR GstMediaPlayer: Reported error: GStreamer error received from element decoder: Sua instalação do GStreamer está com um plug-in faltando., debug info: gstdecodebin2.c(4592): gst_decode_bin_expose (): /GstPipeline:karaokepipeline/GstDecodeBin:decoder:
no suitable plugins found:
Missing decoder: Advanced Streaming Format (ASF) (video/x-ms-asf)

DEBUG MultimediaTest: error returned: GStreamer error received from element decoder: Sua instalação do GStreamer está com um plug-in faltando., debug info: gstdecodebin2.c(4592): gst_decode_bin_expose (): /GstPipeline:karaokepipeline/GstDecodeBin:decoder:
no suitable plugins found:
Missing decoder: Advanced Streaming Format (ASF) (video/x-ms-asf)

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed
ERROR GstMediaPlayer: Reported error: GStreamer error received from element source: Internal data stream error., debug info: gstbasesrc.c(2950): gst_base_src_loop (): /GstPipeline:karaokepipeline/GstAppSrc:source:
streaming stopped, reason not-linked (-1)
DEBUG MultimediaTest: error returned: GStreamer error received from element source: Internal data stream error., debug info: gstbasesrc.c(2950): gst_base_src_loop (): /GstPipeline:karaokepipeline/GstAppSrc:source:
streaming stopped, reason not-linked (-1)
DEBUG MultimediaTest: testing mid
DEBUG PluginManager: attempting to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so
ERROR PluginManager: failed to load plugin plugin_pitchchanger from /usr/lib64/spivak/plugins/plugin_pitchchanger.so: The shared library was not found.
DEBUG GstMediaPlayer: pipeline state changed from NULL to READY, pending PAUSED

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(spivak:3): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed
ERROR GstMediaPlayer: Reported error: GStreamer error received from element decoder: Sua instalação do GStreamer está com um plug-in faltando., debug info: gstdecodebin2.c(4592): gst_decode_bin_expose (): /GstPipeline:karaokepipeline/GstDecodeBin:decoder:
no suitable plugins found:
Missing decoder: audio/x-midi-event (audio/x-midi-event)

ERROR GstMediaPlayer: Reported error: GStreamer error received from element midiparse0: Internal data stream error., debug info: midiparse.c(1285): gst_midi_parse_loop (): /GstPipeline:karaokepipeline/GstDecodeBin:decoder/GstMidiParse:midiparse0:
streaming stopped, reason not-linked (-1)
DEBUG MultimediaTest: error returned: GStreamer error received from element decoder: Sua instalação do GStreamer está com um plug-in faltando., debug info: gstdecodebin2.c(4592): gst_decode_bin_expose (): /GstPipeline:karaokepipeline/GstDecodeBin:decoder:
no suitable plugins found:
Missing decoder: audio/x-midi-event (audio/x-midi-event)

DEBUG MultimediaTest: error returned: GStreamer error received from element midiparse0: Internal data stream error., debug info: midiparse.c(1285): gst_midi_parse_loop (): /GstPipeline:karaokepipeline/GstDecodeBin:decoder/GstMidiParse:midiparse0:
streaming stopped, reason not-linked (-1)
DEBUG KaraokeWidget::stop
DEBUG KaraokeWidget::stopped

The report names PluginManager, GstMediaPlayer, MultimediaTest, and GStreamer-related failures but no source files or tests. Start by reproducing the PT-BR problem and determine which logged failure is related to the language issue rather than missing plugins or audio negotiation. Done means the PT-BR failure has a defined cause and a verified correction.

Written by the indexing model from the issue text.