Here is it:
athieu@PC1:/var/log$ tail -100 syslog
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 gnome-shell[1993]: Object St.Icon (0x55f91fad6290), has been already deallocated — impossible to set any property on it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:223 (7fa2faac78b0 @ 231)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:224 (7fa2faac78b0 @ 273)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 gnome-shell[1993]: Object St.BoxLayout (0x55f91f5ab8c0), has been already deallocated — impossible to set any property on it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:223 (7fa2faac78b0 @ 231)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 gnome-shell[1993]: Object St.Icon (0x55f91f50e490), has been already deallocated — impossible to set any property on it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:224 (7fa2faac78b0 @ 273)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:223 (7fa2faac78b0 @ 231)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 gnome-shell[1993]: Object St.BoxLayout (0x55f91f68cb70), has been already deallocated — impossible to set any property on it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:224 (7fa2faac78b0 @ 273)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 gnome-shell[1993]: Object St.Icon (0x55f91f81ba90), has been already deallocated — impossible to set any property on it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:223 (7fa2faac78b0 @ 231)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:224 (7fa2faac78b0 @ 273)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 gnome-shell[1993]: Object St.BoxLayout (0x55f91f114d50), has been already deallocated — impossible to set any property on it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:223 (7fa2faac78b0 @ 231)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 gnome-shell[1993]: Object St.Icon (0x55f91f6f9490), has been already deallocated — impossible to set any property on it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:224 (7fa2faac78b0 @ 273)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #5   7fffb8a314e0 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #6   7fffb8a320f0 b   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: == Stack trace for context 0x55f91889c1e0 ==
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #0   7fffb8a303a0 I   resource:///org/gnome/shell/ui/osdWindow.js:223 (7fa2faac78b0 @ 231)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #1   7fffb8a30470 b   resource:///org/gnome/gjs/modules/_legacy.js:82 (7fa2facb0b80 @ 71)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #2   7fffb8a304b0 I   self-hosted:977 (7fa2facf01f0 @ 413)
Oct 16 17:33:33 PC1 gnome-shell[1993]: Object St.BoxLayout (0x55f91f428d20), has been already deallocated — impossible to set any property on it. This might be caused by the object having been destroyed from C code using something such as destroy(), dispose(), or remove() vfuncs.
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #3   7fffb8a30560 I   resource:///org/gnome/gjs/modules/signals.js:128 (7fa2facc18b0 @ 386)
Oct 16 17:33:33 PC1 org.gnome.Shell.desktop[1993]: #4   55f922a9d330 i   resource:///org/gnome/shell/ui/layout.js:538 (7fa2faa04310 @ 127)