Error: 'Lang' is undefined

[Edcomm]

What can be causing following error?

I installed LL, was able to register user and log in. Clicking on each link within the dashboard causes following error -

Line: 1 Error: 'Lang' is undefined

Lang.addMessages({"en":{"reporting.create":"Create report","reporting.view":"View report","reporting.deleted":"That report has been deleted","reporting.who":"Who","reporting.did":"Did","reporting.what":"What","reporting.where":"Where","reporting.when":"When","reporting.with_result":"With result","reporting.related":"Related statements","reporting.clear":"Clear","reporting.save":"Save","reporting.query":"Query","reporting.run_query":"Run query","reporting.name":"Name","reporting.created":"Created","reporting.desc":"Description","reporting.run":"Run","reporting.view_stats":"View statements","reporting.graph":"Graph","reporting.to":"to","reporting.headings.info":"Report information","reporting.headings.learners":"Select learners","reporting.headings.verbs":"Select verbs","reporting.headings.activities":"Select activities","reporting.headings.types":"Select activity types","reporting.headings.parents":"Select parent activities","reporting.headings.groups":"Select grouping activities","reporting.headings.platforms":"Select platforms","reporting.headings.instructors":"Select instructors","reporting.headings.languages":"Select languages","reporting.headings.scales":"Scaled","reporting.headings.completion":"Success \/ Complete","reporting.headings.dates":"Select dates","reporting.scales.scaled":"Scaled","reporting.scales.raw":"Raw","reporting.scales.min":"Min","reporting.scales.max":"Max","reporting.booleans.success":"Success","reporting.booleans.completion":"Complete","reporting.dates.intro":"You can select a since date, until date or both to filter results between two dates.","reporting.dates.since":"From (Since)","reporting.dates.until":"From (Until)","reporting.placeholders.name":"Name your report","reporting.placeholders.desc":"Describe your report","exporting.title":"Exports","exporting.info":"Export information","exporting.select.report":"Select a report","exporting.select.fields":"Select fields","exporting.fields.name":"Name","exporting.fields.description":"Description","exporting.fields.created":"Created","exporting.actions.saved":"The export has been saved.","exporting.actions.save":"Save","exporting.actions.download":"Download","exporting.actions.add.field":"Add field","exporting.actions.add.export":"Add export","exporting.actions.edit":"Edit","exporting.actions.delete":"Delete","exporting.new.name":"New export","exporting.new.description":"A new export.","exporting.errors.noReport":"Must have a report.","exporting.errors.noFields":"Must have at least one field.","exporting.errors.mustSave":"You must save this new export before you can download it's result.","exporting.errors.notFound":"Export with id :exportId not found.","exporting.errors.reportExistence":"Report does not exist","exporting.errors.delete":"Could not delete report.","exporting.errors.undefinedKey":":key is not defined.","exporting.placeholders.statementField":"Statement field name","exporting.placeholders.userField":"Your field name","exporting.placeholders.name":"Name this export","exporting.placeholders.description":"Describe this export","exporting.unknown":"Unknown","site.edit":"Edit","site.add":"Add","site.cancel":"Cancel","site.save":"Save","site.delete":"Delete","site.value":"Value","site.username":"Username","site.password":"Password","site.title":"Title","site.name":"Name","site.description":"Description","site.logo":"Logo","site.language":"Language","site.submit":"Submit","site.remove":"Remove","site.settings":"Settings","site.dash":"Dashboard","site.admin_dash":"Admin dashboard","site.logout":"Logout","site.email":"Site email","site.account":"Account settings","site.yes":"Yes","site.no":"No","site.on":"On","site.off":"Off","site.super_admin":"Super admin","site.admin":"Admin","site.plus":"Observer plus","site.observers":"Observers","site.open":"Open","site.closed":"Closed","site.details":"Details","site.register":"Register","site.login":"Login","site.forgotten_pw":"Forgotten password","site.edit_settings":"Edit settings","site.total_learners":"Total learners","site.statement_total":"Statement total","site.learner_number":"Learner number","site.activity_sources":"Activity sources","site.xapi_calls":"xAPI calls (retrival)","site.create_lrs":"Who can create new LRSs?","site.api_status":"API Status","site.registration":"Registration","site.restrict":"Restrict registration","site.claim":"Learners claim?","site.help.email":"The main contact email for this instance of Learning Locker","site.help.create_lrs":"Select which user roles can create new LRSs","site.help.api_status":"Turn on the Learning Locker API. @todo","site.help.registration":"Is user registration for the site open or closed?","site.help.restrict":"Restrict registration to a particular email domain. Just enter the domain part e.g. ht2.co.uk","site.help.claim":"Can learners' login and claim all xAPI statements that belong to them?","site.help.language":"Default language to be used when generating statements using the statement generator","site.navbar.lrs_home":"LRS home","site.navbar.other":"Other","site.navbar.none":"No LRSs available","site.navbar.lrs_list":"LRS List","site.updated":"Learning Locker details have been updated","site.welcome":"Welcome to Learning Locker","site.sure":"Are you sure?","site.roleChange":"Role successfully changed","site.hello":"hello","site.saved":"Saved successfully","site.notSaved":"Could not save.","statements.statements":"Statements","statements.generator":"Generator","statements.filter":"filter","statements.explorer":"Explorer","statements.reporting":"Reporting","statements.exporting":"Exporting","statements.analytics":"Analytics","statements.added":"Your statement has been added."},"es_ES":{"reporting.password":"Las contrase\u00f1as deben tener al menos seis caracteres y coincidir con la confirmaci\u00f3n.","reporting.user":"No podemos encontrar un usuario con ese e-mail.","reporting.token":"Este token de restablecimiento de contrase\u00f1a no es v\u00e1lido.","reporting.sent":"Recordatorio de contrase\u00f1a enviado!","reporting.reset":"Su contrase\u00f1a se ha restablecido","reporting.password_reset":"Restablecer contrase\u00f1a","reporting.password_reset_form":"Para restablecer su contrase\u00f1a, rellene este formulario","reporting.password_reset_sent":"Ha sido enviado un correo electr\u00f3nico con el restablecimiento de la contrase\u00f1a ","exporting":"exporting","site.edit":"edici\u00f3n","site.delete":"eliminar","site.username":"Nombre de usuario","site.password":"Contrase\u00f1a","site.title":"T\u00edtulo","site.name":"Nombre","site.description":"Descripci\u00f3n","site.logo":"Logo","site.language":"Idioma","site.submit":"Enviar","site.remove":"Retire","site.settings":"Ajustes","site.dash":"Dashboard","site.admin_dash":"Tablero de instrumentos de administraci\u00f3n","site.logout":"Salir","site.email":"Email sitio","site.account":"Configuraciones de la cuenta","site.yes":"S\u00ed","site.no":"No","site.on":"En","site.off":"Off","site.super_admin":"Administrador de Super","site.admin":"Administraci\u00f3n","site.plus":"Observe m\u00e1s","site.observers":"Observadores","site.open":"Abierta","site.closed":"Cerrado","site.details":"Detalles","site.register":"Registro","site.login":"Iniciar sesi\u00f3n","site.forgotten_pw":"Contrase\u00f1a olvidada","site.edit_settings":"Editar configuraci\u00f3n","site.total_learners":"Alumnos totales","site.statement_total":"Total de Declaraci\u00f3n","site.learner_number":"N\u00famero de Estudiantes","site.activity_sources":"Las fuentes de actividad","site.xapi_calls":"Llamadas xAPI (recuperaci\u00f3n)","site.create_lrs":"\u00bfQui\u00e9n puede crear nuevos LRS?","site.api_status":"Estado de la API","site.registration":"Registro","site.restrict":"Restringir registro","site.claim":"Afirman Estudiantes?","site.help.email":"El correo electr\u00f3nico de contacto principal para esta instancia de Learning Locker","site.help.create_lrs":"Seleccione los roles de usuario se pueden crear nuevos LRSs","site.help.api_status":"Encender el API Learning Locker. @pendiente","site.help.registration":"\u00bfEl registro de usuarios para el sitio es abierto o cerrado?","site.help.restrict":"Restringir el registro a un dominio de correo electr\u00f3nico en particular. Solo tiene que introducir la parte de dominio, por ejemplo, ht2.co.uk","site.help.claim":"\u00bfLos estudiantes pueden hacer login y reclamar todas las sentencias xAPI que le pertenecen?","site.help.language":"Lenguaje por defecto a utilizar al generar sentencias utilizando el generador de sentencias","site.navbar.lrs_home":"Inicio LRS","site.navbar.other":"Otros","site.navbar.none":"Ning\u00fan LRS disponible","site.navbar.lrs_list":"Listado de LRSs","site.updated":"Detalles Learning Locker han sido actualizados","site.welcome":"Bienvenido a Learning Locker","statements.statements":"Sentencias","statements.generator":"Generador","statements.filter":"filtro","statements.explorer":"Explorador","statements.reporting":"Informes","statements.analytics":"Estad\u00edsticas","statements.added":"Su sentencia ha sido a\u00f1adida"}});Lang.setLocale("en");

[ryasmi]

Hi @Edcomm, thanks for reporting this issue. Please edit your comment to follow our bug template. Once you've edited your comment we'll attempt to reproduce your issue.

Example of the template in use.

[ryasmi]

Note: Closed because of inactivity. Will be reopened if it becomes active again.

[optimizeHIT-daanish]

This issue seems to have surfaced again. Would it be better if I create a ticket according to your template or would you prefer reopening this issue?

On build 1.11, opening Reporting and Exporting pages gives an empty page. Console lists two errors:

ReferenceError: Lang is not defined messages:1:1 at messages:1:1 ReferenceError: trans is not defined at underscore.js line 1454 > Function:4:1

Edit: This seems to have solved the issue for me: https://github.com/LearningLocker/learninglocker/issues/451