System Message: ERROR/3 (/home/runner/work/physics_bank/physics_bank/content/public/019.Magnetism/Magnetic Force/Electron in a Solenoid/Electron in a Solenoid.md, line 51) Substitution error:UndefinedError: ‘dict object’ has no attribute ‘vars’ — Open Physics Problem Bank
System Message: ERROR/3 (/home/runner/work/physics_bank/physics_bank/content/public/019.Magnetism/Magnetic Force/Electron in a Solenoid/Electron in a Solenoid.md, line 51) Substitution error:UndefinedError: ‘dict object’ has no attribute ‘vars’ — Open Physics Problem Bank
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