Panel isnt working properly- using Concrete 5.7

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Hi everyone,

I recently moved my site over to another domain and now the panel is acting up. The panels slide out but the edit panel has no buttons and the composer shows a blank page. This is the error that it throws.
{"error":{"message":"Call to a member function setPageTypeComposerFormLayoutSetControlObject() on a non-object"},"errors":["Call to a member function setPageTypeComposerFormLayoutSetControlObject() on a non-object"]}

Does anyone have an idea what the problem may be? Any help/suggestions would be greatly appreciated!

Thank you!
Lisa