this.FormDataConstructor is not a constructor on mailing list create methods

Hello,

When I’m trying to call the lists.create and lists.members.createMembers I’m getting this error : TypeError: this.FormDataConstructor is not a constructor at e.createFormData (/code/node_modules/mailgun.js/webpack:/mailgun/lib/formDataBuilder.ts:30:10) at e.postWithFD (/code/node_modules/mailgun.js/webpack:/mailgun/lib/request.ts:161:43) at e.createMembers (/code/node_modules/mailgun.js/webpack:/mailgun/lib/mailListMembers.ts:65:25)

Here are my calls : const createMembersResponse = await this.mailgunClient.lists.members.createMembers(mailingListAddress, createMembersInput); and const createResponse = await this.mailgunClient.lists.create(createInput);

Other function like lists.members.listMembers are working fine

mailgun.js version 7.0.4

[EdixonAlberto]

What @krinaxDev is correct, another way to solve this problem in a more elegant way to continue using ES-Modules would be to do the import like this: import * as formData from 'form-data'

[krinaxDev]

The problem was the import of form data It was like this : import formData from 'form-data'; this.mailgunInstance = new Mailgun(formData); this.mailgunClient = this.mailgunInstance.client({ username: this.username, key: this.apiKey, });

and I replaced it by : const formData = require('form-data'); this.mailgunInstance = new Mailgun(formData); this.mailgunClient = this.mailgunInstance.client({ username: this.username, key: this.apiKey, });

Hope this can help you