error in spfx react

[devandevare]

Error - [tsc] node_modules/pptxgenjs/types/index.d.ts(847,31): error TS1110: Type expected.

"dependencies": { "@microsoft/sp-core-library": "1.14.0", "@microsoft/sp-lodash-subset": "1.14.0", "@microsoft/sp-office-ui-fabric-core": "1.14.0", "@microsoft/sp-property-pane": "1.14.0", "@microsoft/sp-webpart-base": "1.14.0", "office-ui-fabric-react": "7.174.1", "pptxgenjs": "3.12.0", "react": "16.13.1", "react-dom": "16.13.1" }, "devDependencies": { "@microsoft/rush-stack-compiler-3.9": "0.4.47", "@microsoft/sp-build-web": "1.14.0", "@microsoft/sp-module-interfaces": "1.14.0", "@microsoft/sp-tslint-rules": "1.14.0", "@types/react": "16.9.51", "@types/react-dom": "16.9.8", "@types/webpack-env": "1.13.1", "ajv": "~5.2.2", "gulp": "~4.0.2" }