If that is the actual code, I'm not surprised you're getting errors. You seem to have mismatched quotes and words in that string that are spelled wrong or possibly multiple lines of code mashed together.
"data Sourcer"? What is that?
An
add
line in the web.config should have three attributes, name, connectionString, and providerName. You've got all three, but because of mismatched quotes and misspellings in the connectionString part, the parsing is failing. Take a look at what you've got:
<add
name="abcEntities"
connectionString="metadata=res://*/Models.Model1.csdl|res://*/Models.Model1.ssdl|res://*/Models.Model1.msl;provider=MySql.Data.MySqlClient;provider connection string=data Sourcer=123.12.123.123;User Id=myusername;password=mypass;database=mydatase"
;MultipleActiveResultSets=True"SslMode = none"
providerName="System.Data.EntityClient" />