BYN 21.2 (10 баллов)

Беларусь
BYN
RU

+375 44 507 90 00

Error
TypeError: Cannot read property 'length' of undefined
   at Constructor.renderFilterBlock (eval at <anonymous> (/var/www/bookyourstudy/prod/resources/js/reactServer.js:39:5), <anonymous>:1:605695)
   at Constructor.renderFiltersBlock (eval at <anonymous> (/var/www/bookyourstudy/prod/resources/js/reactServer.js:39:5), <anonymous>:1:606964)
   at Constructor.render (eval at <anonymous> (/var/www/bookyourstudy/prod/resources/js/reactServer.js:39:5), <anonymous>:1:614502)
   at ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext (/var/www/bookyourstudy/prod/node_modules/react/lib/ReactCompositeComponent.js:587:34)
   at ReactCompositeComponentWrapper._renderValidatedComponent (/var/www/bookyourstudy/prod/node_modules/react/lib/ReactCompositeComponent.js:607:32)
   at ReactCompositeComponentWrapper.wrapper [as _renderValidatedComponent] (/var/www/bookyourstudy/prod/node_modules/react/lib/ReactPerf.js:66:21)
   at ReactCompositeComponentWrapper.mountComponent (/var/www/bookyourstudy/prod/node_modules/react/lib/ReactCompositeComponent.js:220:30)
   at ReactCompositeComponentWrapper.wrapper [as mountComponent] (/var/www/bookyourstudy/prod/node_modules/react/lib/ReactPerf.js:66:21)
   at /var/www/bookyourstudy/prod/node_modules/react/lib/ReactServerRendering.js:42:38
   at ReactServerRenderingTransaction.perform (/var/www/bookyourstudy/prod/node_modules/react/lib/Transaction.js:136:20)