The job was canceled because "ubuntu-latest_18_x" failed.

Subsequent variable declarations must have the same type. Variable 'AbortSignal' must be of type '{ new (): AbortSignal; prototype: AbortSignal; abort(reason?: any): AbortSignal; any(signals: AbortSignal[]): AbortSignal; timeout(milliseconds: number): AbortSignal; }', but here has type '{ new (): AbortSignal; prototype: AbortSignal; }'.

Overload signatures must all be optional or required.