I created a Homebrew race and when I choosed the race when I was creating a character I got this error:

HANDLER ERROR

You have discovered a portal to a new plane where things are not working as intended.

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{"race":{"entityRaceId":18335,"entityRaceTypeId":1743923279,"fullName":"Dhampir","baseRaceId":null,"description":"<p>Among the undead abominations that plague&nbsp;this world of us, vampires are perhaps those&nbsp;whose charade is the most lifelike. Their nature,&nbsp;however, is a predatory one, their farce of life&nbsp;one that requires constant blood sacrifices:&nbsp;their very existence is a cancer that drys out&nbsp;and corrupts natural life. Other undeads are&nbsp;mockeries of life; vampires are a plague aimed&nbsp;to consume it.<br /><br />Thence it's not too unexpected that&nbsp;vampires, only among the undead strains, are&nbsp;capable of giving life; for their essence is&nbsp;mingled with blood, and blood is the life. Not&nbsp;every race, however, is capable of combining&nbsp;itself with undeath: only humans are adaptable&nbsp;enough to procreate a child tainted by&nbsp;vampirism.<br /><br />Those children are called usually&nbsp;dhampir, dhampyr, or simply half-vampires; for&nbsp;half of their legacy comes from the undead&nbsp;parasites that walk the night.</p>","avatarUrl":null,"largeAvatarUrl":"https://media-waterdeep.cursecdn.com/avatars/thumbnails/233/791/1000/1000/636580399055534348.jpeg","portraitAvatarUrl":"https://media-waterdeep.cursecdn.com/avatars/233/792/636580399057094389.jpeg","moreDetailsUrl":"/characters/races/18335-dhampir","isHomebrew":true,"sourceIds":[],"groupIds":[],"type":1,"subRaceShortName":null,"baseName":"Dhampir","racialTraits":[{"definition":{"id":152944,"entityTypeId":1960452172,"displayOrder":null,"name":"Ability Score Increase","description":"<p>Your Charisma increases by 2, Dexterity by 1, Strength by 1</p>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":null},"sourceId":null,"sourcePageNumber":null}},{"definition":{"id":152953,"entityTypeId":1960452172,"displayOrder":null,"name":"Age","description":"<p>Dhampirs are&nbsp;long lived thanks to their vampire heritage. They reach adulthood at the same rate as a human, but can live for several hundred years.</p>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":null},"sourceId":null,"sourcePageNumber":null}},{"definition":{"id":152954,"entityTypeId":1960452172,"displayOrder":null,"name":"Size","description":"<p>Dhampir&nbsp;have the same range of height and weight&nbsp;as humans.</p>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":null},"sourceId":null,"sourcePageNumber":null}},{"definition":{"id":152955,"entityTypeId":1960452172,"displayOrder":null,"name":"Speed","description":"<p>Your base walking speed is 30 feet.</p>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":null},"sourceId":null,"sourcePageNumber":null}},{"definition":{"id":152958,"entityTypeId":1960452172,"displayOrder":null,"name":"Darkvision","description":"<p>Cursed&nbsp;by your vampire heritage, you can easily see through darkness. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can&rsquo;t discern color in darkness, only shades of gray.</p>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":null},"sourceId":null,"sourcePageNumber":null}},{"definition":{"id":152992,"entityTypeId":1960452172,"displayOrder":null,"name":"Bite","description":"<p>Your grow fangs instantly and can be used as natural weapons, which you can use to make unarmed strikes. If you hit with it, you deal piercing damage equal to 1d6 + your Strength modifier.&nbsp;As a&nbsp;bonus action, you can make a&nbsp;feeding attack with your bite. If the attack hits, it deals its normal damage, and you gain temporary hit points and BP (minimum of 1) equal to your Constitution modifier per turn until you stop feeding. You can only gain up to your lvl in temporary HP and drink enough BP's as you need to be satisfied.&nbsp;</p>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":null},"sourceId":null,"sourcePageNumber":null}},{"definition":{"id":153048,"entityTypeId":1960452172,"displayOrder":null,"name":"Claws","description":"<p>You can instantly&nbsp;grow a pair of claws giving you a climbing speed of 20 feet. In addition, your claws are natural weapons, which you can use to make unarmed strikes. If you hit with them, you deal slashing damage equal to 1d4 + your Strength modifier, instead of the bludgeoning damage normal for an unarmed strike.</p>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":3},"sourceId":null,"sourcePageNumber":null}},{"definition":{"id":153052,"entityTypeId":1960452172,"displayOrder":null,"name":"Vampiric Traits","description":"<p>When you reach 1st level, you gain the ability&nbsp;<a title=\"Charm Person\" href=\"https://www.dndbeyond.com/spells/charm-person\">Charm Person</a>,&nbsp;at 3rd lvl you you gain the ability&nbsp;<a title=\"Spider Climb\" href=\"https://www.dndbeyond.com/spells/spider-climb\">Spider Climb</a>, at 5th level you gain the ability&nbsp;<a title=\"Web\" href=\"https://www.dndbeyond.com/spells/web\">Web</a>, and at 7th you you gain the ability&nbsp;<a title=\"Misty Step\" href=\"https://www.dndbeyond.com/spells/misty-step\">Misty Step</a>&nbsp;spell. At 9th lvl you&nbsp;can use the vampiric ability <a title=\"Children of the Night\" href=\"https://www.dndbeyond.com/monsters?filter-type=0&amp;filter-search=vampire&amp;filter-cr-min=&amp;filter-cr-max=&amp;filter-armor-class-min=&amp;filter-armor-class-max=&amp;filter-average-hp-min=&amp;filter-average-hp-max=&amp;filter-is-legendary=&amp;filter-has-lair=\">Children of the Night</a>&nbsp;1x a day.&nbsp; At 11th lvl you gain the ability to <a title=\"Polymorph\" href=\"https://www.dndbeyond.com/spells/polymorph\">Polymorph</a> into a spider, at 13th you can&nbsp;<a title=\"Polymorph\" href=\"https://www.dndbeyond.com/spells/polymorph\">Polymorph</a>&nbsp;in a bat, and at 15th lvl you can <a title=\"Polymorph\" href=\"https://www.dndbeyond.com/spells/polymorph\">Polymorph</a>&nbsp;in Mist.&nbsp;Each of these spells can be a limited amount a day but you can regain the ability when you finish a long rest or wait until the following dawn. Charisma is your spellcasting ability for&nbsp;these spells.</p>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":null},"sourceId":null,"sourcePageNumber":null}},{"definition":{"id":153112,"entityTypeId":1960452172,"displayOrder":null,"name":"Vampiric Resistance","description":"<p>Being&nbsp;half undead you have resistance to Necrotic damage.</p>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":null},"sourceId":null,"sourcePageNumber":null}},{"definition":{"id":153117,"entityTypeId":1960452172,"displayOrder":null,"name":"Sunlight Sensitivity","description":"<p>You have disadvantage on Wisdom (<a class=\"tooltip-hover\" href=\"https://www.dndbeyond.com/compendium/rules/basic-rules/using-ability-scores#Perception\" rel=\"nofollow\" data-tooltip-href=\"//http:www.dndbeyond.com/skills/14-tooltip?disable-webm=1&amp;disable-webm=1&amp;disable-webm=1\">Perception</a>) checks that rely on sight when you, the target of your attack, or whatever you are trying to perceive is in direct sunlight.</p>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":null},"sourceId":null,"sourcePageNumber":null}},{"definition":{"id":153183,"entityTypeId":1960452172,"displayOrder":null,"name":"Bloodlust","description":"<p>Due to your vampiric nature you have to drink blood to live however, you don't have to drink nearly as much as vampire does. You have to drink at least one blood point (1 BP) a day to satisfy your hunger or you will suffer 1 Level of exhaustion and it's effects. Once you gain a level of exhaustion you immediately must make a Wisdom saving throw to maintain control. The DC equals 10 x 2 + your Exhaustion Level.&nbsp;On a failed save, you must move directly towards the nearest creature to you and use your feeding bite action against that creature. If there is more than one possible target, the DM chooses the target. You then regain control for the remainder of your turn. <br /><br />For an example if you have 1 lvl of exhaustion your DC to control your Bloodlust would be 12 (10 x 2 +1 lvl of exhaustion):</p>\r\n<table><caption>Exhaustion Effects</caption>\r\n<thead>\r\n<tr>\r\n<th>Level</th>\r\n<th>Effect</th>\r\n</tr>\r\n</thead>\r\n<tbody>\r\n<tr>\r\n<td>1</td>\r\n<td>Disadvantage on&nbsp;<a class=\"autolink\" href=\"https://roll20.net/compendium/dnd5e/Ability%20Scores#h-Ability%20Checks\">Ability Checks</a></td>\r\n</tr>\r\n<tr>\r\n<td>2</td>\r\n<td>Speed halved</td>\r\n</tr>\r\n<tr>\r\n<td>3</td>\r\n<td>Disadvantage on&nbsp;<a class=\"autolink\" href=\"https://roll20.net/compendium/dnd5e/Combat#h-Attack\">Attack</a>&nbsp;rolls and saving throws</td>\r\n</tr>\r\n<tr>\r\n<td>4</td>\r\n<td>Hit point maximum halved</td>\r\n</tr>\r\n<tr>\r\n<td>5</td>\r\n<td>Speed reduced to 0</td>\r\n</tr>\r\n<tr>\r\n<td>6</td>\r\n<td>Death</td>\r\n</tr>\r\n</tbody>\r\n</table>","snippet":"","hideInBuilder":false,"hideInSheet":false,"activation":{"activationTime":null,"activationType":null},"sourceId":null,"sourcePageNumber":null}}],"weightSpeeds":{"normal":{"walk":30,"fly":0,"burrow":0,"swim":0,"climb":0},"encumbered":null,"heavilyEncumbered":null,"pushDragLift":null,"override":null},"featIds":[225,3272,3428,3650,4432,7049,7336,8646,9229,5073,12008,12056,13610,13822,14325,14957,15948,15955,16633,20306],"size":"Medium"}}

Thanks for a speedy response! Sure here's the url to the Homebrew Race: https://www.dndbeyond.com/characters/races/18335-dhampir