thinkphp exception hint text garbled

thinkphp Error Prompt Text garbled


First
The text of the error message is garbled and does not know what is going on,

The hint is a MySQL error, but the MySQL connection is normal. The database encoding and the program are UTF8. Site Front desk display normal, the front desk data is normal. This is the error that occurs when you log in, this is the website with Onethink.
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Post the login controller code

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The code you saved in the file is also checked.
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This error page HTML should not have the header to specify the encoding, the browser is based on your operating system's default language resolution--GBK
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File encoding not set

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