laravel migration error after define defaultStringLength - development

laravel migration error after define defaultStringLength

i get this error after define ‘defaultStringLength’

[SymfonyComponentDebugExceptionFatalErrorException]
Call to undefined method
IlluminateDatabaseSchemaMySqlBuilder::defaultSt ringLength()

from Laravel Questions and Answers https://laravelquestions.com/php/laravel-migration-error-after-define-defaultstringlength/
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