No attachement for failed tests

[mcf1727]

There is no attachement in the slack channel even the test fails.
I'm using WebdriverIO / mocha

`
const { IncomingWebhook } = require("@slack/webhook");
const failedColor = "#dc3545";
class SlackService {
constructor(config) {
this.config = config;

    this.failedTests = 0;
    this.tests = 0;
    if (!this.config.webhook) {
      console.error(
        "[slack-reporter] Slack Webhook URL is not configured, notifications will not be sent to slack."
      );
      return;
    }

    this.webhook = new IncomingWebhook(this.config.webhook);
    this.message = this.config.message || "WebdriverIO Slack Reporter";
    this.attachments = [
      {
        pretext: `*${this.message} *`,
        title: "",
      },
    ];
}

afterTest(test, context, results) {
    this.tests++;

    const { error, passed } = results;

    if (error && error.matcherResult && error.matcherResult.message()) {
        let testError = error.matcherResult
          .message()
          .replace(
            /[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g,
            ""
          );
        
        let attach = {
          color: failedColor,
          author_name: test.fullName || `${test.parent} - ${test.title}`,
          footer: testError.toString(),
          footer_icon: "https://img.icons8.com/color/48/000000/info--v1.png",
          ts: Date.now(),
        };
        this.attachments.push(attach);
    }

    if (!passed) {
        this.failedTests++;
    }
}

async after() {
    //if (this.config.notifyOnlyOnFailure === true) {
    if ((this.config.notifyOnlyOnFailure === true && this.failedTests > 0) || this.config.notifyOnlyOnFailure === false) {
        this.attachments[0].title += `Total tests: ${
          this.tests
        } \n Total passed: ${this.tests - this.failedTests} \n Total failed: ${
          this.failedTests
        }`;

        await this.webhook.send({
          attachments: this.attachments,
        });
    }
}

}

module.exports = SlackService;
`