Fixed Module.render()

[pingiun]

When testing /theme/example/render I found an error with Module.render. This fixed it for me, I don't know why it was modulePath before, because this function isn't defined. Below is the error I received while testing /theme/example/render: ReferenceError: modulePath is not defined at Module.render (/root/test/node_modules/meanio/lib/core_modules/module/index.js:162:21) at /root/test/packages/theme/server/routes/theme.js:19:11 at Layer.handle [as handle_request] (/root/test/node_modules/meanio/lib/core_modules/server/node_modules/express/lib/router/layer.js:82:5) at next (/root/test/node_modules/meanio/lib/core_modules/server/node_modules/express/lib/router/route.js:110:13) at Route.dispatch (/root/test/node_modules/meanio/lib/core_modules/server/node_modules/express/lib/router/route.js:91:3) at Layer.handle [as handle_request] (/root/test/node_modules/meanio/lib/core_modules/server/node_modules/express/lib/router/layer.js:82:5) at /root/test/node_modules/meanio/lib/core_modules/server/node_modules/express/lib/router/index.js:267:22 at Function.proto.process_params (/root/test/node_modules/meanio/lib/core_modules/server/node_modules/express/lib/router/index.js:321:12) at next (/root/test/node_modules/meanio/lib/core_modules/server/node_modules/express/lib/router/index.js:261:10) at SendStream.error (/root/test/node_modules/meanio/lib/core_modules/server/node_modules/express/node_modules/serve-static/index.js:107:7)