Why not fix the cause, instead of hiding the problem:
diff --git a/sympy/solvers/solvers.py b/sympy/solvers/solvers.py
index 60a1ef5..6d97225 100644
--- a/sympy/solvers/solvers.py
+++ b/sympy/solvers/solvers.py
@@ -584,7 +584,7 @@ def solve_ODE_first_order(eq, f):
n = Wild('n', exclude=[f(x)])
r = eq.match(a*diff(f(x),x) + b*f(x) + c*f(x)**n)
- if r:
+ if r and r[n] != 1:
t = C.exp((1-r[n])*integrate(r[b]/r[a],x))
tt = (r[n]-1)*integrate(t*r[c]/r[a],x)
return ((tt + Symbol("C1"))/t)**(1/(1-r[n]))
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