问题：
Upgraded to Studio Canary build.升级到 Studio Canary 版本。 My previous project of Telegram Messenger is giving following error.我之前的 Telegram Messenger 项目出现以下错误。
Error:All flavors must now belong to a named flavor dimension.错误：所有风味现在必须属于命名风味维度。 The flavor 'armv7' is not assigned to a flavor dimension.风味“armv7”未分配给风味维度。 Learn more at https://d.android.com/r/tools/flavorDimensions-missing-error-message.html在https://d.android.com/r/tools/flavorDimensions-missing-error-message.html了解更多信息
What should I do?我该怎么办？ I have already seen that link but couldn't understand what to do.我已经看过那个链接，但不明白该怎么做。 I have 3 build variants now, release,debug and foss.我现在有 3 个构建变体，release、debug 和 foss。
解决方案：
参考一： https://en.stackoom.com/question/2z3l1参考二： https://stackoom.com/question/2z3l1