info: [notifications.init] Registering jobs.
info: [user.startJobs] Registering User Jobs
info: Enabling 'trust proxy'
info: [plugins] Initializing plugins system
info: [themes] Using theme nodebb-theme-lavender
info: Static directory routed for theme: nodebb-theme-lavender
info: Middlewares loaded.
warn: [plugins/nodebb-widget-essentials] staticDir is deprecated, use staticDirs instead
info: [plugins] Found 1 CSS file(s) for plugin nodebb-widget-essentials
info: [plugins] Found 3 CSS file(s) for plugin nodebb-plugin-designer
error: [plugins/nodebb-plugin-designer] This plugin's CSS is incorrectly configured, please contact the plugin author.
info: [plugins] Found 1 js file(s) for plugin nodebb-theme-lavender
info: [plugins] Loaded plugin: nodebb-plugin-dbsearch
info: [plugins] Loaded plugin: nodebb-widget-essentials
info: [plugins] Loaded plugin: nodebb-plugin-designer
info: [plugins] Loaded plugin: nodebb-plugin-custom-homepage
info: [plugins] Loaded plugin: nodebb-plugin-emailer-mandrill
info: [plugins] Loaded plugin: nodebb-theme-lavender
info: [plugins] Sorting hooks to fire in priority sequence
info: [plugins] Plugins OK
warn: [plugins/nodebb-plugin-designer] "callbacked" deprecated as of 0.4x. Use asynchronous method instead for hook: filter:scripts.get
warn: [meta.scripts.get] Could not resolve mapped path: plugins/public/lib/designer.js. Are you sure it is defined by a plugin?
warn: [meta.scripts.get] Could not resolve mapped path: plugins/public/vendor/ace/ace.min.js. Are you sure it is defined by a plugin?
warn: [meta.scripts.get] Could not resolve mapped path: plugins/public/vendor/ace/worker-css.js. Are you sure it is defined by a plugin?
warn: [meta.scripts.get] Could not resolve mapped path: plugins/public/vendor/ace/mode-css.js. Are you sure it is defined by a plugin?
info: [meta/css] Minifying LESS/CSS
info: [sounds] Sounds OK
info: [meta/js] Compilation complete
info: [themes] Compiling templates
error: Cannot read property 'value' of undefined
TypeError: Cannot read property 'value' of undefined
    at Object.tree.Anonymous (/opt/nodebb/install/nodebb/node_modules/less/lib/less/tree/anonymous.js:4:24)
    at Object.tree.Import.eval (/opt/nodebb/install/nodebb/node_modules/less/lib/less/tree/import.js:99:28)
    at Object.tree.Ruleset.evalImports (/opt/nodebb/install/nodebb/node_modules/less/lib/less/tree/ruleset.js:139:40)
    at Object.tree.Ruleset.eval (/opt/nodebb/install/nodebb/node_modules/less/lib/less/tree/ruleset.js:62:21)
    at Object.toCSS (/opt/nodebb/install/nodebb/node_modules/less/lib/less/parser.js:575:46)
    at /opt/nodebb/install/nodebb/src/meta.js:367:27
    at Object.finish [as _finish] (/opt/nodebb/install/nodebb/node_modules/less/lib/less/parser.js:669:28)
    at Object.subFinish [as _finish] (/opt/nodebb/install/nodebb/node_modules/less/lib/less/import-visitor.js:63:47)
    at Object.subFinish [as _finish] (/opt/nodebb/install/nodebb/node_modules/less/lib/less/import-visitor.js:63:47)
    at Object.subFinish [as _finish] (/opt/nodebb/install/nodebb/node_modules/less/lib/less/import-visitor.js:63:47)
info: [app] Shutdown (SIGTERM/SIGINT) Initialised.
info: [app] Database connection closed.
info: [app] Shutdown complete.

[loader] Experienced three start attempts in 10 seconds, most likely an error on startup. Halting.