Cant load spell

[Exactly]

Hello i have one problem...

[Warning - Monsters::loadMonster] Cant load spell. data/monster/8.4/Wyrm Boss.xml

My script:

<?xml version="1.0" encoding="UTF-8"?>
  <monster name="Wyrm Boss" nameDescription="a wyrm boss" race="blood" species="fire" experience="1800000" speed="290" manacost="0">
    <health now="190000" max="190000"/>
    <look type="291" corpse="8941"/>
    <targetchange interval="60000" chance="0"/>
    <strategy attack="100" defense="0"/>
    <flags>
      <flag summonable="0"/>
      <flag attackable="1"/>
      <flag hostile="1"/>
      <flag illusionable="0"/>
      <flag convinceable="0"/>
      <flag pushable="0"/>
      <flag canpushitems="1"/>
      <flag staticattack="85"/>
      <flag lightlevel="0"/>
      <flag lightcolor="0"/>
      <flag targetdistance="1"/>
      <flag runonhealth="1"/>
    </flags>
 <attacks>
    <attack name="melee" interval="2000" skill="80" attack="3000"/>
    <attack name="energy" interval="1000" chance="11" radius="3" target="0" min="-1100" max="-2220">
      <attribute key="areaEffect" value="yellowenergy"/>
    </attack>
    <attack name="energy" interval="1000" chance="10" range="7" target="1" min="-1001" max="-1023">
    <attribute key="areaEffect" value="purpleenergy"/>
    <attribute key="shootEffect" value="energy"/>
    </attack>
    <attack name="physical" interval="1000" chance="11" length="5" spread="0" min="-905" max="-1440">
        <attribute key="areaEffect" value="poff"/>
    </attack>
    <attack name="energy" interval="1000" chance="10" length="4" spread="4" min="-100" max="-1070">
        <attribute key="areaEffect" value="purpleenergy"/>
    </attack>
 </attacks>
    <defenses armor="30" defense="30">
      <defense name="healing" interval="6000" chance="65" min="105" max="275"/>
      <attribute key="areaEffect" value="blueshimmer"/>
    </defenses>
    <elements>
        <element firePercent="20"/>
        <element earthPercent="75"/>
        <element icePercent="-5"/>
        <element deathPercent="-5"/>
    </elements>
    <immunities>
      <immunity energy="1"/>
      <immunity paralyze="1"/>
      <immunity invisible="1"/>
    </immunities>
    <voices interval="3000" chance="5">
      <voice sentence="GRRR!"/>
      <voice sentence="GRROARR!"/>
    </voices>
    <loot>
      <item id="2672" countmax="3" chance1="9000" chancemax="0"/>
      <item id="2148" countmax="100" chance1="30000" chancemax="0"/>
      <item id="2647" chance="2222"/>
      <item id="8921" chance="2100"/>
      <item id="7411" chance="1444"/>
      <item id="2546" countmax="10" chance1="6000" chancemax="0"/>
      <item id="1987" chance="100000">
        <inside>
          <item id="2148" countmax="100" chance1="100000" chancemax="0"/>
          <item id="7430" chance="1654"/>
          <item id="7588" chance="5332"/>
          <item id="8871" chance="2400"/>
        </inside>
      </item>
    </loot>
  </monster>

Thanks!!!