Not able to generate a widget

Hello I am doing the crash course & I am at 11.3.3. I have installed 14.0.0 of node.js and also installed the mendix generator using command  “npm install -g yo generator-mendix gulp-cli”  And now when I try “yo mendix” command from command prompt in an empty directory as suggested I get below error.  can someone suggest on this ? Thanks in advance. My Mendix pro version is 8.8.1
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