Function classlist. Classlist js. cannot read properties of null (reading 'pickalgorithm'). uncaught typeerror: cannot read properties of null (reading 'addeventlistener'). техническая ошибка cannot read properties of undefined.

Function classlist. Classlist js. cannot read properties of null (reading 'pickalgorithm'). uncaught typeerror: cannot read properties of null (reading 'addeventlistener'). техническая ошибка cannot read properties of undefined.
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