Server Error general_unknown when creating relationship

const sdk = require("node-appwrite");
const { Account, ID, Permission, Role } = require("node-appwrite");
const adminClient = new sdk.Client()
  .setEndpoint(process.env.AWENDPOINT)
  .setProject(process.env.AWPROJECTID)
  .setKey(process.env.AWSECRETKEY);

const importTool = async (file, userId, username, session) => {
  // Function code skipped for brevity

  const databases = new sdk.Databases(adminClient);

  const tool = await databases.createDocument(
    process.env.AWDBID, // databaseId
    process.env.AWTOOLSCOLLID, // collectionId
    ID.unique(), // documentId auto generated
    {
      userId: userId,
      name: name,
      description: description,
      userScript: userScript,
    } /*
      [
        Permission.read(Role.user(userId)),
        Permission.update(Role.user(userId)),
        Permission.delete(Role.user(userId)),
      ] */
  );

  for (let field of customFields) {
    try {
      updatedTool = await databases.updateDocument( // This is where the error happens
        process.env.AWDBID, // databaseId
        process.env.AWTOOLSCOLLID, // collectionId
        tool.$id,
        {
          customFields: {
            name: field.name,
            type: field.type,
            value: field.value,
            options: field.options,
            parent: field.parent,
            toolId: tool.$id,
          },
        }
      );
    } catch (error) {
      console.error("Error :", error);
    }
  }
};