Error log.js

Hi,
The chrome console is showing me these errors

log.js:187 No request strings defined. Analytics data will not be sent from this page.
log.js:187 Ignoring request for event. Request string not found: pageview

  msg_(tag, level, messages) {
    if (this.getLevel_() != LogLevel.OFF) {
      let fn = this.win.console.log;
      if (level == 'ERROR') {
        fn = this.win.console.error || fn;
      } else if (level == 'INFO') {
        fn = this.win.console.info || fn;
      } else if (level == 'WARN') {
        fn = this.win.console.warn || fn;
      }
      if (getMode().localDev) {
        messages.unshift('[' + tag + ']');
      }
      fn.apply(this.win.console, messages);
    }
  }

No request strings defined. Analytics data will not be sent from this page.
Ignoring request for event. Request string not found:

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