warning [unknown-polymer-behavior]

[spdev01]

When I finished working on my project, I tried to build using
polymer build
and I received these warnings about the code where I haven't touched.
Not sure if it was just me forgetting to include a few more stuff or not, but here's the log in case anyone is interested and could help me with it

AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-shell/app-shell.html(294,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLoggerBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-auth/app-auth-firebase.html(56,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLoggerBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLoggerBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-service-worker.html(63,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLoggerBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-shell/app-shell-drawer.html(200,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-pages/app-page-404/app-page-404.html(109,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-pages/app-page-home/app-page-home.html(267,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-pages/app-page-contact-us/app-page-contact-us.html(117,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-pages/app-page-sign-up/app-page-sign-up.html(93,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-ui-components/app-snackbar/app-snackbar.html(208,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-pages/app-pages-sign-in/app-page-enter-your-email/app-page-enter-your-email.html(76,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-pages/app-pages-sign-in/app-page-forgot-password/app-page-forgot-password.html(78,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-pages/app-pages-sign-in/app-page-sign-in-with-email/app-page-sign-in-with-email.html(97,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior? AppBehaviors.AppLocalizeBehavior ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ src/app-pages/app-pages-sign-in/app-page-sign-in/app-page-sign-in.html(275,8) warning [unknown-polymer-behavior] - Unable to resolve behavior AppBehaviors.AppLocalizeBehavior. Did you import it? Is it annotated with @polymerBehavior?
Help would be appreciated.
Thank you