Icon won't appear in mattermost 5.37.1

[mrtpcet]

I have installed correctly the plugin via the admin interface, but no icon is shown at the top of channel, only "file list" plugin's icon.

Messages in log :

{"level":"error","ts":1629360253.825719,"caller":"mlog/log.go:251","msg":"Unable to activate plugin","plugin_id":"channel-notes","error":"unable to start plugin: channel-notes: Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.","errorVerbose":"Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.\nunable to start plugin: channel-notes\ngithub.com/mattermost/mattermost-server/v5/plugin.(*Environment).Activate\n\tgithub.com/mattermost/mattermost-server/v5/plugin/environment.go:274\ngithub.com/mattermost/mattermost-server/v5/app.(*Server).syncPluginsActiveState.func2\n\tgithub.com/mattermost/mattermost-server/v5/app/plugin.go:144\nruntime.goexit\n\truntime/asm_amd64.s:1374"}
{"level":"error","ts":1629360253.8453262,"caller":"mlog/log.go:251","msg":"Unable to activate plugin","plugin_id":"channel-notes","error":"unable to start plugin: channel-notes: Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.","errorVerbose":"Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.\nunable to start plugin: channel-notes\ngithub.com/mattermost/mattermost-server/v5/plugin.(*Environment).Activate\n\tgithub.com/mattermost/mattermost-server/v5/plugin/environment.go:274\ngithub.com/mattermost/mattermost-server/v5/app.(*Server).syncPluginsActiveState.func2\n\tgithub.com/mattermost/mattermost-server/v5/app/plugin.go:144\nruntime.goexit\n\truntime/asm_amd64.s:1374"}
{"level":"error","ts":1629360256.9055386,"caller":"mlog/log.go:251","msg":"Unable to activate plugin","plugin_id":"channel-notes","error":"unable to start plugin: channel-notes: Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.","errorVerbose":"Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.\nunable to start plugin: channel-notes\ngithub.com/mattermost/mattermost-server/v5/plugin.(*Environment).Activate\n\tgithub.com/mattermost/mattermost-server/v5/plugin/environment.go:274\ngithub.com/mattermost/mattermost-server/v5/app.(*Server).syncPluginsActiveState.func2\n\tgithub.com/mattermost/mattermost-server/v5/app/plugin.go:144\nruntime.goexit\n\truntime/asm_amd64.s:1374"}
{"level":"error","ts":1629360256.9348683,"caller":"mlog/log.go:251","msg":"Unable to activate plugin","plugin_id":"channel-notes","error":"unable to start plugin: channel-notes: Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.","errorVerbose":"Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.\nunable to start plugin: channel-notes\ngithub.com/mattermost/mattermost-server/v5/plugin.(*Environment).Activate\n\tgithub.com/mattermost/mattermost-server/v5/plugin/environment.go:274\ngithub.com/mattermost/mattermost-server/v5/app.(*Server).syncPluginsActiveState.func2\n\tgithub.com/mattermost/mattermost-server/v5/app/plugin.go:144\nruntime.goexit\n\truntime/asm_amd64.s:1374"}
{"level":"error","ts":1629360333.9632638,"caller":"mlog/log.go:251","msg":"Unable to activate plugin","plugin_id":"channel-notes","error":"unable to start plugin: channel-notes: Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.","errorVerbose":"Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.\nunable to start plugin: channel-notes\ngithub.com/mattermost/mattermost-server/v5/plugin.(*Environment).Activate\n\tgithub.com/mattermost/mattermost-server/v5/plugin/environment.go:274\ngithub.com/mattermost/mattermost-server/v5/app.(*Server).syncPluginsActiveState.func2\n\tgithub.com/mattermost/mattermost-server/v5/app/plugin.go:144\nruntime.goexit\n\truntime/asm_amd64.s:1374"}
{"level":"error","ts":1629360333.9861352,"caller":"mlog/log.go:251","msg":"Unable to activate plugin","plugin_id":"channel-notes","error":"unable to start plugin: channel-notes: Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.","errorVerbose":"Unrecognized remote plugin message: \n\nThis usually means that the plugin is either invalid or simply\nneeds to be recompiled to support the latest protocol.\nunable to start plugin: channel-notes\ngithub.com/mattermost/mattermost-server/v5/plugin.(*Environment).Activate\n\tgithub.com/mattermost/mattermost-server/v5/plugin/environment.go:274\ngithub.com/mattermost/mattermost-server/v5/app.(*Server).syncPluginsActiveState.func2\n\tgithub.com/mattermost/mattermost-server/v5/app/plugin.go:144\nruntime.goexit\n\truntime/asm_amd64.s:1374"}