chart api fails when stock ticker contains a period such as BRK.B

[craigrs84]

Bug Report

Describe the bug

api fails when stock ticker contains a period such as BRK.B

Minimal Reproduction

await yfinance.chart('BRK.B', { period1: new Date(), period2: new Date() - 100, interval: '1d' });

Environment

Browser or Node: node Node version (if applicable): latest LTS version Npm version: Browser verion (if applicable): Library version (e.g. 1.10.1):

Additional Context