Cannot read property addeventlistener. Cannot read properties of null. пример ошибки typeerror. uncaught typeerror: cannot read properties of null (reading 'getcontext'). cannot read properties of null reading.

Cannot read property addeventlistener. Cannot read properties of null. пример ошибки typeerror. uncaught typeerror: cannot read properties of null (reading 'getcontext'). cannot read properties of null reading.
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