This results in a runtime panic "opening dbi :MDB_BAD_VALSIZE: Too big key/data, key is empty, or wrong DUPFIXED size"

opendbi.go

package main

import (
	"log"
	"os"

	mdb "github.com/szferi/gomdb"
)

func main() {
	env, err := mdb.NewEnv()
	if err != nil {
		log.Panic(err)
	}
	err = os.MkdirAll("testmdb", 0755)
	if err != nil {
		log.Panic(err)
	}
	defer os.RemoveAll("testmdb")
	err = env.SetMaxDBs(26)
	if err != nil {
		log.Panic(err)
	}
	err = env.Open("testmdb", 0, 0644)
	if err != nil {
		log.Panic(err)
	}
	tx, err := env.BeginTxn(nil, 0)
	if err != nil {
		log.Panic(err)
	}
	defer tx.Abort()
	badname := ""
	dbi, err := tx.DBIOpen(&badname, mdb.CREATE)
	if err != nil {
		log.Panicf("opening dbi :%v", err)
	}
	log.Printf("opened dbi: %v", dbi)
}