Update error message on bad install

[odow]

No description provided.

[codecov]

Codecov Report

Base: 91.68% // Head: 91.16% // Decreases project coverage by -0.52% ⚠️

Coverage data is based on head (50adf83) compared to base (0ccb813).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #424      +/-   ##
==========================================
- Coverage   91.68%   91.16%   -0.52%     
==========================================
  Files           5        5              
  Lines        1949     1823     -126     
==========================================
- Hits         1787     1662     -125     
+ Misses        162      161       -1     

Impacted Files	Coverage Δ
src/CPLEX.jl	0.00% <ø> (ø)
src/MOI/conflicts.jl	78.20% <0.00%> (-0.55%)	⬇️
src/MOI/indicator_constraint.jl	94.44% <0.00%> (-0.48%)	⬇️
src/MOI/MOI_wrapper.jl	92.14% <0.00%> (-0.47%)	⬇️
src/MOI/MOI_callbacks.jl	93.10% <0.00%> (-0.40%)	⬇️

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