I want a complete error report on the code below so I can fi...

Prompt

I want a complete error report on the code below so I can fix everything in one pass. TASK Read the code character by character. List every real error: syntax, compile, runtime, logic, type, missing imports, broken references, and any mock / dummy / stub / placeholder / fake / simulated content. Mentally execute the code and include errors that would occur at runtime. SUCCESS Every real error listed exactly once, each tied to a specific location. Nothing invented, nothing skipped, nothing merged. OUTPUT Numbered list, one error per line: #. [line/symbol] — : . Final line: END OF ERROR LIST. CONSTRAINTS Errors only — no fixes, no suggestions, no summary, no commentary. Ambiguities count as errors and must be listed $$F(x,y,z) = \begin{pmatrix} (1+xy)^3 \cdot z \,+\, y^2(1+xy)(4+3xy) \\[6pt] y \,+\, 3x(1+xy)^2 \cdot z \,+\, 3xy^2(4+3xy) \\[6pt] 2x \,-\, 3x^2y \,-\, x^3 z \end{pmatrix}$$