varkor
commented
4 years ago I wasn't able to get your code to compile even without frame, but I think this may be caused by frame overriding the cell spacing character & (see this question or this question on TeX.SE). There are two ways to get around this: by using \begin{frame}[fragile], or by using \begin{tikzcd}[ampersand replacement=\&] and replacing the ampersands in the diagram with \& instead. It's a little hard to get around this in quiver itself, as this fix is dependent on the context in which the diagram appears. Could you try those and see if it works?
rhocos3theta
\begin{frame}
[\begin{tikzcd} {M(f,d,y)} && {G} \ \ {E} &&&&& {A} \arrow["{(m_0,m_1)\longleftarrow F^G(E)}"', from=3-6, to=3-1, shift right=1, curve={height=18pt}] \arrow["{\alpha \longleftarrow y||s}"', from=3-1, to=3-6, shift right=1, curve={height=18pt}] \arrow["{r \ or \ random \ string }"', from=3-6, to=1-3] \end{tikzcd}]
\end{frame}
when i compile it tells me wrong,but i can compile without \begin{frame}