Verification code generated using think-captcha in thinkphp5 is not displayed

Question

The verification code generated by think-captcha in thinkphp5 is not displayed

The generated verification code is displayed as follows

Baidu said to add line 39 in helper.php under captcha

\think\Route::rule('captcha','index/captcha');

But it still can’t be displayed

Newbie please give me some advice

Answer 1

It may be caused by the BOM header in your entry file. Search php.bom online and execute it in the project root directory, and try again.