bug: lp-file error: Unrecognized variable bound

[FBumann]

Version Checks (indicate both or one)

• I have confirmed this bug exists on the lastest release of Linopy.

• I have confirmed this bug exists on the current master branch of Linopy.

Issue Description

When solving a linopy model through the lp-api get an error from gurobipy:

Set parameter Username
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Error reading LP format file /private/var/folders/7j/18_93__x4wl2px44pq3f570m0000gn/T/linopy-problem-zxm32_f3.lp at line 21326335
Unrecognized variable bound
Neighboring tokens: " +-0.0 <= x76271 <= +0.0 +-0.0 <= x76272 <= "

Reproducible Example

Working on it

Expected Behavior

Solve as expected (-0.0 == +0.0)

Installed Versions

Details

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