我已將go-pg庫從 v9.0.3 更新到 v9.2.0。得到錯誤：panic: not reached [recovered]        panic: not reached        /usr/local/go/src/runtime/panic.go:969 +0x175github.com/go-pg/pg/v9/internal/pool.(*SingleConnPool).SetConn(...)        /Users/sanches1984/go/src/github.com/sanches1984/statclass/vendor/github.com/go-pg/pg/v9/internal/pool/pool_single.go:61github.com/go-pg/pg/v9.(*baseDB).initConn(0xc0002440f0, 0x1efb500, 0xc00019e008, 0xc000292550, 0x0, 0x0)        /Users/sanches1984/go/src/github.com/sanches1984/statclass/vendor/github.com/go-pg/pg/v9/base.go:115 +0x585github.com/go-pg/pg/v9.(*baseDB).getConn(0xc0002440f0, 0x1efb500, 0xc00019e008, 0x0, 0x0, 0x0)        /Users/sanches1984/go/src/github.com/sanches1984/statclass/vendor/github.com/go-pg/pg/v9/base.go:79 +0x90github.com/go-pg/pg/v9.(*baseDB).withConn(0xc0002440f0, 0x1efb500, 0xc00019e008, 0xc000813c00, 0x0, 0x0)        /Users/sanches1984/go/src/github.com/sanches1984/statclass/vendor/github.com/go-pg/pg/v9/base.go:133 +0x7cgithub.com/go-pg/pg/v9.(*Tx).withConn(...)        /Users/sanches1984/go/src/github.com/sanches1984/statclass/vendor/github.com/go-pg/pg/v9/tx.go:96github.com/go-pg/pg/v9.(*Tx).exec(0xc00072c980, 0x1efb500, 0xc00019e008, 0x1bd4d20, 0x1ec3250, 0x0, 0x0, 0x0, 0x8, 0xc000078cd0, ...)        /Users/sanches1984/go/src/github.com/sanches1984/statclass/vendor/github.com/go-pg/pg/v9/tx.go:149 +0x1f0github.com/go-pg/pg/v9.(*Tx).ExecContext(...)        /Users/sanches1984/go/src/github.com/sanches1984/statclass/vendor/github.com/go-pg/pg/v9/tx.go:139github.com/go-pg/pg/v9.(*Tx).begin(0xc00072c980, 0x1efb500, 0xc00019e008, 0x4b2, 0x0)失?。簍x, err := conn.Begin()發現他們在這里修復它，但它不起作用。有什么問題？