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Hi everyone!
I've been upgrading theme from 7.0 to 7.2.
The problem is layouts. I've upgraded that stuff using this link https://portal.liferay.dev/docs/7-2/tutorials/-/knowledge_base/t/upgrading-7-0-and-7-1-layout-templates-to-7-2
But things like localization don't work inside Layouts.
For example,

${languageUtil.get(locale, 'whats-new-label')}
Console say:
Caused by: freemarker.core._TemplateModelException: Multiple compatible overloaded variations were found with the same priority._The FTL type of the argument values were: Null, string (wrapper: f.t.SimpleScalar)._The Java type of the argument values were: Null, String._The matching overload was searched among these members:_ com.liferay.portal.language.LanguageImpl.get(ResourceBundle, String),_ com.liferay.portal.language.LanguageImpl.get(javax.servlet.http.HttpServletRequest, String, String),_ com.liferay.portal.language.LanguageImpl.get(ResourceBundle, String, String),_ com.liferay.portal.language.LanguageImpl.get(javax.servlet.http.HttpServletRequest, ResourceBundle, String),_ com.liferay.portal.language.LanguageImpl.get(Locale, String),_ com.liferay.portal.language.LanguageImpl.get(javax.servlet.http.HttpServletRequest, ResourceBundle, String, String),_ com.liferay.portal.language.LanguageImpl.get(javax.servlet.http.HttpServletRequest, String),_ com.liferay.portal.language.LanguageImpl.get(Locale, String, String)__----_FTL stack trace ("~" means nesting-related):_ - Failed at: ${languageUtil.get(locale, "whats-new... [in template "null_CUSTOM_valamis-corporate-front-page" at line 18, column 35]_---- [Sanitized]
at freemarker.ext.beans.OverloadedMethods.getMemberAndArguments(OverloadedMethods.java:102)
at freemarker.ext.beans.OverloadedMethodsModel.exec(OverloadedMethodsModel.java:60)
at freemarker.core.MethodCall._eval(MethodCall.java:62)
at freemarker.core.Expression.eval(Expression.java:78)
at freemarker.core.Expression.evalAndCoerceToString(Expression.java:82)
at freemarker.core.DollarVariable.accept(DollarVariable.java:41)
at freemarker.core.Environment.visit(Environment.java:324)
[at freemarker.core.MixedContent.accept(MixedContent.java:54)
at freemarker.core.Environment.visit(Environment.java:324)
at freemarker.core.Environment.process(Environment.java:302)
at freemarker.template.Template.process(Template.java:325)
at com.liferay.portal.template.freemarker.internal.FreeMarkerTemplate.processTemplate(FreeMarkerTemplate.java:137)
at com.liferay.portal.template.BaseTemplate.processTemplate(BaseTemplate.java:127)
... 79 more

At the same time the util above works and I can see the result on the web page, but I can't change order of the portlets or remove them at all.
I think, I might be wrong, but I think that Liferay objects like Locale and functions like languageUtil.get() and so on are not available inside layouts. But why?
Could anybody help me with that please???P.S. Localization works perfect inside templates.