Adding Casting Submission Error

In the submission form, step by step: 1) Type the actor's name into the Name field and click [Check the updates]; 2) Onto "This data should be submitted to specific episodes" message, use the checkbox "Warning understood, go ahead anyway"; 3) Click the checkbox "Provide an explanation to assist in processing this submission" and click [Re-check the updates]; --- The background should turn green, otherwise the above instructions have been neglected --- 4) Click the hyperlink "upload evidence" and upload it as .png, .jpg, .jpeg, or .pdf file, then copy the code; 5) Enter the code copied above in the "Explanation:" field (where text explanations can also be added) and click [Re-check the updates]; 6) Finally, click [Submit these updates].