Volumio stopped working after plugin upgrade

Hello All,

I have upgraded some plugins a couple of days ago, and that broke my volumio.

Here are the logs :

Jul 25 15:49:13 volumio volumio[8728]: info: -------------------------------------------
Jul 25 15:49:13 volumio volumio[8728]: info: -----            Volumio3              ----
Jul 25 15:49:13 volumio volumio[8728]: info: -------------------------------------------
Jul 25 15:49:13 volumio volumio[8728]: info: -----          System startup          ----
Jul 25 15:49:13 volumio volumio[8728]: info: -------------------------------------------
Jul 25 15:49:14 volumio volumio[8728]: info: MYVOLUMIO Environment detected
Jul 25 15:49:14 volumio volumio[8728]: info: Configured plugin music_service/ytcr cannot be loaded. Removing from configuration
Jul 25 15:49:14 volumio volumio[8728]: info: Plugin folders cleanup
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning into folder /volumio/app/plugins/
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning category audio_interface
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning category miscellanea
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning category music_service
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning category plugins.json
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning category system_controller
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning category user_interface
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning into folder /data/plugins/
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning category music_service
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning category system_controller
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning category user_interface
Jul 25 15:49:14 volumio volumio[8728]: info: Scanning category ytcr
Jul 25 15:49:14 volumio volumio[8728]: info: Plugin folders cleanup completed
Jul 25 15:49:14 volumio volumio[8728]: info: -------------------------------------------
Jul 25 15:49:14 volumio volumio[8728]: info: -----      Core plugins startup        ----
Jul 25 15:49:14 volumio volumio[8728]: info: -------------------------------------------
Jul 25 15:49:14 volumio volumio[8728]: info: Loading plugins from folder /volumio/app/plugins/
Jul 25 15:49:14 volumio volumio[8728]: info: Adding plugin upnp to MyMusic Plugins
Jul 25 15:49:14 volumio volumio[8728]: info: Adding plugin airplay_emulation to MyMusic Plugins
Jul 25 15:49:14 volumio volumio[8728]: info: Adding plugin upnp_browser to MyMusic Plugins
Jul 25 15:49:14 volumio volumio[8728]: info: Loading plugins from folder /data/plugins/
Jul 25 15:49:14 volumio volumio[8728]: /volumio/app/pluginmanager.js:309
Jul 25 15:49:14 volumio volumio[8728]:               var boot_priority = package_json.volumio_info.boot_priority;
Jul 25 15:49:14 volumio volumio[8728]:                                                             ^
Jul 25 15:49:14 volumio volumio[8728]: TypeError: Cannot read property 'boot_priority' of undefined
Jul 25 15:49:14 volumio volumio[8728]:     at PluginManager.loadCorePlugins (/volumio/app/pluginmanager.js:309:61)
Jul 25 15:49:14 volumio volumio[8728]:     at PluginManager.startPlugins (/volumio/app/pluginmanager.js:102:26)
Jul 25 15:49:14 volumio volumio[8728]:     at new CoreCommandRouter (/volumio/app/index.js:48:42)
Jul 25 15:49:14 volumio volumio[8728]:     at Object.<anonymous> (/volumio/index.js:54:21)
Jul 25 15:49:14 volumio volumio[8728]:     at Module._compile (internal/modules/cjs/loader.js:1063:30)
Jul 25 15:49:14 volumio volumio[8728]:     at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
Jul 25 15:49:14 volumio volumio[8728]:     at Module.load (internal/modules/cjs/loader.js:928:32)
Jul 25 15:49:14 volumio volumio[8728]:     at Function.Module._load (internal/modules/cjs/loader.js:769:14)
Jul 25 15:49:14 volumio volumio[8728]:     at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
Jul 25 15:49:14 volumio volumio[8728]:     at internal/main/run_main_module.js:17:47
Jul 25 15:49:14 volumio systemd[1]: volumio.service: Main process exited, code=exited, status=1/FAILURE
Jul 25 15:49:14 volumio systemd[1]: volumio.service: Failed with result 'exit-code'.
Jul 25 15:49:14 volumio systemd[1]: Started dynamicswap service.
Jul 25 15:49:14 volumio systemd[1]: dynamicswap.service: Succeeded.
Jul 25 15:49:15 volumio systemd[1]: volumio.service: Service RestartSec=100ms expired, scheduling restart.
Jul 25 15:49:15 volumio systemd[1]: volumio.service: Scheduled restart job, restart counter is at 381043.
Jul 25 15:49:15 volumio systemd[1]: dynamicswap.service: Start request repeated too quickly.
Jul 25 15:49:15 volumio systemd[1]: dynamicswap.service: Failed with result 'start-limit-hit'.
Jul 25 15:49:15 volumio systemd[1]: Failed to start dynamicswap service.
Jul 25 15:49:15 volumio systemd[1]: Stopped Volumio Backend Module.
Jul 25 15:49:15 volumio systemd[1]: Started Volumio Backend Module.

Can someone help me how to solve this? Can I disable the plugins from SSH?

Many thanks,
Attila