One of my players has broken D&D 5e Charactermancer sheet

In one of my games player started leveling up. Her sheet became broken. As she says, she only started Character Sheet.  I cannot edit it as well - buttons don't react and I get following exception in console: jquery-1.9.1.js:4421 Uncaught Error: Syntax error, unrecognized expression: [name=comp_Unable to find target element_name]     at Function.Sizzle.error (jquery-1.9.1.js:4421)     at tokenize (jquery-1.9.1.js:5076)     at Function.Sizzle [as find] (jquery-1.9.1.js:3964)     at jQuery.fn.init.find (jquery-1.9.1.js:5576)     at app.js?1557852740:561     at Function.C.each.C.forEach (base.js?1557851378:6)     at Object.d20.journal.charmancerLoadStep (app.js?1557852740:561)     at Object.<anonymous> (app.js?1557852740:561)     at fire (jquery-1.9.1.js:1037)     at Object.fireWith [as resolveWith] (jquery-1.9.1.js:1148) Here's screenshot. There's no particular steps to reproduce this issue at least that I was able to notice. I was able to remove this, however issue was not really fix and now it throws me an error that I cannot start Charactermancer  

Hello Omega Envych, I'm sorry to hear that you and your player are having issues with the character sheet. On the error you are currently having, I see that you do have a level for the character. Can you confirm that you have add the HP needed for the Character that is stated in the error? If not, please update the hp manually and then see if you still get the error message.   Additionally, can both you and your player confirm that you have carefully work through all of the following steps of our guide to  Solving Technical Issues ? Step 1: Make sure to use the right browser Please check if these issues persist when using both Chrome  and  Firefox. Step 2: Ensure that there are no extensions/addons interfering with Roll20 Please disable  all  add-ons/extensions. Step 3: Clear your cache Thank you!