Apollo Graphql landingpage error

[Egi_Godknows]

i apollo graphql server landing page doesn’t open after i switched to typescript,

error page

[Egi_Godknows]

heres my indx.ts file

[Egi_Godknows]

tsconfig.json

[Egi_Godknows]

package.json

[Kheang_Hok_Chin]

see if this here might help hint why: API Reference: Landing page plugins - Apollo GraphQL Docs